I'm not in the Trek fandom at all, but that's thanks to some toxic fans I avoid.

A brief summary though is everyone hated Wheaton at first because of his character in TNG, but eventually realized that even if you didn't like the character, hating the child actor was insane. He would later warm up to everyone for giving very canid, human answers to questions people have about TNG on slashdot. He was fairly active on that forum in the 00's. He was also the host of a tournament show on G4 and blew the whistle on the rigging the producers were pulling.

More recently though, he hosted the interviews for a bunch of nuTrek behind the scenes stuff and came across as a lapdog desperate to have some role in one of them. I only saw those because of the RLM reviews and I didn't even realize it was Wheaton at first. Compared to publicly boycotting HP, it was fairly petty.