As a "non-preachy" vegan, when I dine out with others, we usually go places where there's options for everyone. They try to do the same for me too.
Once in a while, I'll still go to an all-vegan place with certain friends, but that's because that place offers something special... a plant based menu that tries to be its own thing, not just overpriced fast food.
If it's just burgers and fries, many places have Beyond and Impossible burgers already. No need to specifically go to a vegan place where the omnivores are just going to be disappointed.
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Edit: It's also just a lot easier these days in general. Many many restaurants have vegan options, if not directly labeled as such, at least easily modifiable to become such. Apps like HappyCow also make it easier to find these places.
I always thought this was the more sensible option anyway (every restaurant having a couple options, rathed than a couple restaurants having only vegan options). It's not like it was 10 or 15 years ago when people didn't even know what the word meant.