Yes, this - absolutely. Every extension you install is another potential risk/attack vector. Consider the sources carefully and run the least number of extensions possible. Each one potentially has control of your browser, so choose accordingly.
If there were ever a post to drive me away from a product, this'd be it. Good to know that I should stay well away from KeepassXC, if this is what its defenders sound like.
It's really disappointing to see what's a now flagged post and push-back to what was obviously a flagrant comment. For a more level-headed opinion on KeepassXC, it's decently polished and easy to use. It's also open-source and cross-platform. I like it and came from the original Keepass. I didn't have any specific issues with the first besides wanting to try something new. I haven't noticed any major issues with KeepassXC myself but open to hearing others' experiences.
Comment was flagged so I have no idea what they said, but I use KeePassXC and I'm happy with it. Regular KeePass is good too, but I use XC because it's cross-platform.
If you turn on showdead in your user profile settings you can see flagged comments. I find it helps with context in situations like this, but certain types of posts do attract a lot of racist/sexist garbage that you normally cant see so be forewarned.
I signed up for LastPass a couple of weeks ago, and they started sending me spammy emails every single day. I went into account settings and disabled the emails, and they kept coming. I opened a support thread on their forum, linking many other similar threads going back several years, and saying that they have to fix this under GDPR... Silence.
I deleted my account and switched to BitDefender. Still getting the LastPass emails though, whenever I check my spam folder.
Also, LastPass slowed my Android phone a lot. BitDefender doesn't seem to do that.
In short, my recommendation is: stay the hell away from LastPass. They can't even handle an email system, I don't trust them at all to handle my passwords.
Their Windows application was also painfully slow.
I paid them for years but I no longer trust them, it seems to me they are incompetent as an organization even if the people who work there might or might not be smart.