I think the piece of information that is being missed is that VTC is inherently anti capitalist and therefore the concept of "supporting businesses" so that they can survive doesn't really make sense in that context. (See link Hamid posted)

Just in the context of trying to get a work group to go to lunch, finding a place that fits everyone's diets is tough, so if a place exists that is one, and only one, diet type then big groups wont be able to go there for business events or catering. Depending on the location, that could be a huge revenue source missed.

Veganism is in its core a boycott, so that is the default take. I don't live in a big city so I don't go to restaurants. If you read the link I posted, I think there are a lot of problems with restaurants that go beyond veganism and they are offensive to me as an anarchist. I strongly dislike businesses, business owners and I like to do things for myself. To that end the more I lean on a life of compromise the less I feel is being done. By organizing pot lucks, friends dinners, participating in my local Food Not Bombs and promoting home cooking I am building an alternative to the carnist structures in our world that is more meaningful than making an individual decision to go to a carnist business and give them money that they then invest in more carnist businesses. This is also why I don't really like buying products labeled "vegan" from meat companies or buying impossible burgers from Burger King, we aren't convincing them to switch, we are participating in horizontal segmentation where they carve out two markets from one that don't cannibalize each other. I used to have the meeting notes from an shareholder meeting at Burger King where the CEO explains this but I lost it in my international move a few years ago among all my boxes of computer stuff. https://www.investopedia.com/terms/h/horizontalmarket.asp

I think adding meat dishes to a vegan restaurant and still calling it vegan is offensive and anti-vegan. If you want to go to restaurants then I guess that is a compromise you have to make for your own reasons but I don't think that it is vegan decision in scope. I don't attack people online or in person for it but I don't think you'd be a good fit for a community of radical vegans and anti capitalists. I probably wouldn't remove your comments from a message board like he lemmy.world one which is basically a vegan news community and appeals to beginners and transitioners but I would remove it from my instance. There is no requirement to go to restaurants in this world and my life got more interesting when I stopped going to places like that.

I think the easier it gets to be vegan, the more people will get on board.

But if they are not participating in the vegan boycott, are they on board? I've been a vegan for a long time and understand people are at different places, that said the biggest problem is recidivism. The longer you go as a vegan making compromises the less likely that you're going to stick with it. For me this meant that at one point I needed to actually change my life and social groups to align with what I believe instead of forcing what I believe into a world that doesn't agree and is hostile. For me this was a good decision, I made new friends, I have new things to do and I'm far more socially active as a mid 40s vegan in my vegan world than most of my old friends and coworkers are.