then they should ALL accept that they can make mistakes and dont know it all (i realise this doesnt apply to every PO)
Yes, but you pull someone over because from experience you can tell a tint is OTT. You then get a traffic officer with the right equipment to test it, if it is legal, then you apologise and let the person go. If it isn't then you've done your job. You just apply a bit of common sense.
It is not hard to tell what is and isn't a legal tint or close to legal - even for me, and I'm not a police officer or had training, however, in my many many years of car enthusiasm you get a good idea of what is and is not legal. IF there's any doubt, you investigate and do something about it.
I'm actually quite glad people are pulled over for illegal tints, its those sort of people that claim "oh sorry I didn't see you" when they're involved in an incident - or generally that do not declare modifications to their insurers costing other motorists more in insurance.
OP, I actually think it might look quite good on your car. I quite like tints on some cars. Having spent a lot of time in very hot countries, they actually have a sensible function there, but it does give the car a decent look (depending on what car it is) - estates look pretty good with a mild tint in my opinion, so long as it is not to the detriment of visibility - especially at night.