How bad is Opera really?

With the release of “Opera One”, I've been considering switching to it from Vivaldi. Vivaldi has been causing me issues lately, mainly in regard to my pinned tabs disappearing sometimes. I wasn't entirely sure about switching previously, but now I'm thinking I could give Opera a try.

That said, I've heard terrible things about privacy in Opera. Does anyone have thoughts on this? I don't care *too* much when it comes to basic privacy intrusion, like Google's trackers and stuff. …

bad opera pinned privacy release things thinking vivaldi