I couldn't think of a worse methodology
Vegan Theory Club
Rules:
1. No carnists, conservatives, or PBC-supporting libs allowed. Vegans anticapitalists only.
2. No advocating animal deaths, abuse, vivisection, experimentation, testing, or mistreatment.
3. No racism, transphobia, ableism, homophobia, sexism, speciesism, or nazi behavior.
4. Please content warn (CW), spoiler, or NSFW potentially triggering content. When in doubt, it's better to be safe than sorry.
5. If you are an asshole to others, we will ban you. We have the ability to also enforce new rules when unforeseen moments arise.
How so?
Analysing comments from one specific community on one specific platform and taking them at face value is a pretty shit way to gain insight into anti-vegan attitudes and their underlying causes
You can't call this science even if you believe that the humanities are science.
Of course, which is why they stated their focus was highly specific - especially given the nature of reddit - suggesting future research to better understand the ideology.
They acknowledged the limits of their study in section 4.5 titled "Limitations and future directions."