Actually it's pretty easy to not be trackable online. You don't even need a VPN etc. Just go to a wifi hotspot. Or hack someone's private wifi.
There you go - so I don't understand why people are so bothered, if it's that easy then go for it.
pretty sure the porn industry is a not insubstantial chunk of the internet
For some people - for me, and many others it is an irrelevance. I'm sure most people use the internet 99% of the time for value rather than just a bit of perving... but perhaps I'm wrong. Quite sad really.
At one point it was certainly a luxury but it is rapidly developing into a requirement in order to live your life normally - which is why I'm so opposed to restrictions being placed upon it beyond preventing extreme/illegal content being available. I'm not some loon that wants to "go off the grid" btw (I'm not saying you were suggesting that but wanted to clarify) - I just believe firmly in the right to privacy and am against ineffective and intrusive measures being introduced that restrict our liberties.
How will restricting some pornography affect your freedom? I do accept that mild pornography is probably pretty tame compared to what I'm sure exists on there (i.e. violent sexual scenes, exploitation, "revenge porn", as well as violent videos showing death and horrific life altering events) - and I get that people should be free - but this newfound freedom of the internet has proven that humans have no self control. Now that all this information is so readily available people seek out more and more extreme things - I don't know if it is entirely healthy.
I had the unfortunate experience of watching a real death on the internet (African militia casually shooting villagers, it was graphic, and so offhand in their execution of men and women) - it really has stuck with me and made me wish I had never seen it (this was over 10 years ago when all this stuff was still relatively novel). Having seen death in real life, somehow seeing it on the internet made it so casual and easy, I can see how this can be very emotionally scarring for some people. We never had access to this extreme level of graphic detail before. Now, this does not have to be a bad thing too I accept, but humans are poor at controlling themselves, and we sometimes are too carefree for our own good. Some people have no self control either and keep seeking out the next worse thing.
Regarding tracking, we have strict data privacy laws that protect us so I don't agree with the first two points you've made. It's exactly these protections that are being slowly eroded by the current government with completely false reasoning of "protecting us against terrorism" (with something that is easily circumvented so instead just allows monitoring and profiling of the general public) and "protecting children against pornography" (with something that is easily circumvented so does not provide the protections that it claims). See also "break encryption" for further examples of the way the government wants things to go.
Data privacy laws do exist, but surely with a warrant and relevant permissions they would be overturned regardless of terrorism no? Surely you wouldn't mind a bad guy, or a gang be apprehended with all this evidence available?
Don't get me wrong, I'd love to live in a world where we all don't need to be profiled, or have data protection laws, and so on. What's the answer if we don't do this? Also, how is your life directly being impacted by what is being proposed? I'm not saying you're wrong, and I clearly have missed something, so apologies for being a bit slow, but I'm quite happy to admit I'm clueless about this. However, all I need is some pros/cons or a list of things that will explain why chasing this agenda will lead to something really bad. I understand people want to have privacy, because they don't want some of their private thoughts, emails, activities or parts of their lives recorded (whether legitimate or not, legal or not etc...). If you're an average Joe then surely all this will hardly or not even impact you, unless I've missed something (which I think I clearly have). This is more significant if you're a person of influence/celebrity or whatever.
The internet is not always a good tool, look at the photo leaks of celebrities sending private messages to their loved ones (be they "sexy" poses or not). Hence my distancing from social media - not that I send naked selfies (that didn't exist at the time I would have done it!), but the internet is uncontrolled and is a free for all - maybe it needs a bit of it? I don't know. I still see it as a tool and a distraction. I'm quite happy when I go somewhere where there is no internet - doesn't bother me in the slightest.