𝘋𝘪𝘳𝘬

No-one did and you can basically establish you fully independent DNS. The DNS unter ICANN control is just the default.

https://en.wikipedia.org/wiki/Alternative_DNS_root

That’s the question of this thread. Yes.

What are you using for this type of thing?

I just created a send-only mailbox in the account I already have at my hosting service and use this in all my services.

I’m not going to set up a mail server and deal with all the security issues and problems with private dial-up IP addresses myself. Been there, done that. Wasn’t fun.

Never have I ever heard about apps that need a swap file to operate normally.

Remember when they said “swap should be 2 times the amount of RAM”.

Why would I waste 128 GiB of storage for nothing?

Short answer: yes.

Long answer: yes, but longer.