You are absolutely right and I had not considered your second point, after all it is a free site and it would be hosting free stuff stupidly, but it wouldn't necessarily have to be a site hosted by someone, it could simply be a torrent index (although that would have to be hosted by someone else, but you won't need exabytes of space or unlimited bandwidth) where the users themselves share and host the file, it would make sense? probably not at all, but on torrent you will find those who share Ubuntu ISOs and music downloaded directly from Youtube, maybe someone did something like that with NexusMods.

I don't have the slightest problem creating accounts, my problem comes when I create an account and my inbox starts to fill up with spam, and it doesn't matter if I delete my account, they already have my email in their database, which they are probably going to share or sell to third parties. I'm not saying it's the case of Nexusmods, honestly it's the first time I use it in my life, but there are millions of websites, how can I trust one or the other? Simple, I don't, that's why I use temporary emails and email maskers.

I love when people assume things beforehand.