Furthermore, do they believe that if current AES projects were to make veganism a priority, that this would weaken the influence of bourgeois thought and strengthen the revolutions occurring there?

There will have to be a lot of changing hearts & minds before this would strengthen the revolution instead of alienating people. Remember the party must not run too far ahead of the masses. However, the arguments are simply too strong for anybody seriously engaged in shaping the ideology of the party to ignore. There have been plenty of successful-ish leftist revolutions that had (from our modern perspective) glaring gaps in their attitude toward certain oppressed classes of people, whether from failure of party leadership or desire not to alienate the masses. I believe animal liberation is another of these instances.

Anyway, most leftist spaces I've inhabited are very tolerant of at least vegetarianism, and all potluck-style events will be heavily skewed toward vegetarian-friendly dishes (this also serves halal & kosher people by default). Vegetarians & vegans are very well represented in these spaces, often reaching 25-50% by informal count (groups of anarchist bent are often much higher). So things are heading in the right direction.