But everyone can host their own server?

Also because you can’t be sure with an open source application like matrix you should trust applications like those linked here that are either closed source or centralised?

Especially since it has.the crypto included by default makes me very sceptical of it.

Also why compare 2 tools that no-one heard of and is using and not add stuff like signal or matrix to the comparison? Probably since it would’ve let those 2 look worse?