It is fashionable/on trend though currently isn't it and much of that increase in availability has been through satan's cock sucking marketing (Thanks Bill) company's pumping the vegan pound for every beat of it's meat free heart if the truth be known. A lot of those company's are just jumping on the bandwagon whist continuing to trough out the same goods that you see as part of the problem. Gregg's haven't stopped sticking sausage in the bake bean and cheese slice. (thank god), M&S are still selling corned beef to old ladies at 3 times the price of Aldi alongside their vegan peasnap and balsamic vinegar windfall oakleaf crisps. Let's not forget the rainbow wrap either
Yes there is a rise in people who are making changes to their eating habits based upon their conscience relating to climate change but they are a percentage of that on-trend shift in consumer habits not the entirety of it. Most of the people I know who use milk alternatives are doing it for fad diet purposes and all but one are meat eaters.
If people want to think that by going vegan they're part of a global movement then that's great, I think it's probably a good vehicle for change for some folk if they think they're doing it as a social concience movement, and I agree there are things we need to do about food production and the state of the planet but the rise in veganism isn't solely driven by people making those choices.
It's on trend and I would like to know how many of them are still vegans in 5, 10, 15 years time? This happened when we were teens didn't it with Mozzatarianism? Every other kid in school was a vegi for a term when I was in 5th year. All the edgy girls were eating nut roast and hedgehog crisps.
Anyway like I say, each to their own and I applaud your stance on this but to think that part of the current shift isn't being driven by marketing honchos and a trend that will itself change like the eating habit changes you've pointed out with milk is a bit too hopeful for me.