I selfhost on a cheap VPS I found on LowEndBox. The security setup (not SimpleLogin) was more involved than SimpleLogin. Pretty easy to get working and I’ve had not a single issue in 1.5 years of selfhosting it. I pay $11/yr for the VPS compared to $30/yr for SimpleLogin.

With regard to your specific questions - I’ve only selfhosted for myself with one domain. You can add multiple users and domains though.

Liner lock knives have been around for decades, I think that suggests there isn’t a problem when used correctly. The benefit is that you get a very secure folding knife when the knife is extended, and you can fold it with one hand.

No such mechanism. Sharp things are inherently dangerous - go slow, pay attention, and you’ll be fine.

Xbox exclusivity.

Memmy so far, it’s got most of the features you’d want, even different themes. The others are all very good, too, though, including wefwef PWA which mimicks Apollo very closely.

I use them all throughout the day, but use Memmy the most right meow.

Well yea, that’s not a knock against Mast, that’s a preference for a type of social media. Mast is the Twitter equivalent; if you don’t like Mast, you would t like Twitter (or vice versa as it were).

Pretty sure lemmy.world is just a dude, and it’s one of the largest instances.