I understand people use these logins, but I'm not trusting a third-party login to gate access to anything I might miss. It's already annoying enough that there are virtually no access guarantees for a service, but to add a second point of failure is a risk I'm not going to take if I have any fear of losing access. For something like TikTok where I can download the recipe videos the risk is appropriately low, but that's the only place I can think of off the top of my head where I actually use a login provider.

Plus, it offers very little convenience for users vs just using a password manager. I realize figuring out the right bcrypt/datastore setup is kind of annoying, not to mention opening you up to liability, but it's always been worth it to me in the past.