As I recall, Superwholock was mostly a fandom joke, and some people liked it and some people didn't like it and some people took it Way Too Seriously, but there wasn't any major drama as such. The Johnlock Conspiracy now, that was crazy (and some people ended up getting doxxed or otherwise harmed in real life by it). But I was never actually in Sherlock fandom except for reading fic by a few authors I already knew I liked from other fandoms, so I was just watching from the sidelines, and I'm sure my impressions are not necessarily complete or accurate.