How could you say that Mutiny is self-custodial if users are pushed straight away to the domain app.mutinywallet.com and NOT to their own domain/server?

IT IS NOT DIFFERENT than WoS, except you control the keys, but if that domain where sits the node/server of your LDK node goes bust, you are fucked, you control nothing.

Guys please explain CLEARLY these facts before you jump and comparing it with WoS.