Anything tastes like chorizo if you add fat, garlic and paprika. It's magic
This thread interests me a lot more than discussing animal treatment; I eat a vegan diet and it has nothing to do with animal rights. Purely environmental. In fact I feel less healthy than when I ate meat too, I'm pretty convinced I personally feel best with meat and eggs in my diet.
I ended up doing more or less what OP aims for, though I find it hard to do the grey area/moderation so I'm more on the "vegan until I'm out and about where there's no options". For instance I was at a barbecue Saturday and took some burgers, houmous, snacks etc. But the provided sides were pretty minimal so I had some potato salad (mayonnaise) and a slice of cheese to avoid eating a dry burger in bun. That's about as far as I've flexed recently, but I will always accept a cup of tea regardless of what milk goes in.
I think my priorities go: tea > politeness/gratitude as a guest > food waste > veganism.
Being able to flex here and there is useful, the one time I've had meat was when work took us for a full Christmas dinner in 2021 and I wanted to be able to join in and appreciate that being provided for us.
My partner was vegan when we met, so I was "mostly vegan at home" until 2020. Then I did veganuary and just... Didn't know how to stop? Did I go and get a steak on 1st February? So I've ended up basically vegan unless caught out. It's harder work, and I'd love to be a little more flexible for my own health really. I think humanity making a gentle change is more impactful than a few individuals going hardcore.