Notes:

I'll kinda throw my own two cents in here, but it's pretty much what OP is saying. If you wanna draw bara/rule 34 of Zabivaka and/or if you like the rule 34 that's being drawn of him, that's fine. If you don't like the rule 34 of him and don't prefer seeing it, that's fine too. But don't try to draw it out of spite or shun/attack the people who do draw rule 34 of him or like the sexual art of him just because you don't like it yourself. Either way, it makes you look petty and childish. And yet the fandom wonders why the internet makes fun of them so much.