Oh, that actually looks really cool! Seems perfect for those times when you don’t want to start up a whole Excel / Google Sheet. That actually seems perfect for what OP is asking for, provided they don’t mind that it isn’t offline. At least it doesn’t require making an account! Pretty cool that you can share pages too.

It doesn’t. But then, blocking someone on Discord doesn’t even entirely remove their messages from chat. It will just collapse their messages.