I skipped over this at first, but the more I think about it the more it's adding up.
It's easy to forget these days, but every single form of creator monetisation initially had backlash. The first handful of YouTube Partners in the late 2000s/early 2010s were accused of selling out. The first people to accept fan donations were accused of e-begging, and this became even more prominent when Patreon started taking off. Brand deals were criticised by people worried about potential conflicts of interest. When Twitch introduced the bits/cheers system a lot of people didn't like it because it drastically changed the tone of a streamer's chat so paying viewers would get priority.
It wasn't really until the "adpocalypse" in 2017 when crowdfunding YouTube and Twitch content lost its stigma fully. Obviously if management have explicitly told him not to disable Super Chats but he did anyway he's dumb for doing that, but I can understand why an oldfag like Vesper might have some lingering hangups about either taking too much money from his fans at once, or having the monetisation being too prominent of a factor in his streams.