I agree with them, and yet I eat meat, especially when my mother / girlfriend cooks it for me. Are vegetarians going to moral-judge me? Some of them might; Others would just see me as "strong" enough to resist meat.
With most politicians, the more you listen to them the more inconsistencies you will find. rms, however, is remarkably consistent and is unrelentingly principled.
I wish I were only one-tenth as principled as rms. Then I can reject meat and only use Free software. Alas, I'm not, so... rms can moral-judge me and I won't mind.
I don't think that prevents me from being a support of either causes, however.