You’re right https://www.copyright.gov/1201/2018/faqs.html

iirc Kvantum manager helps you pick GTK theme, dunno if there’s a same or similarly matching theme tho.

You could also consider Zulip they have been around for a while as the succesor of IRC but never arose in popularity. I like their concept of #tags for filtering messages inside a channel through #topics :)

Not OP, but I’ll chime in my reason: History. Messages older than… 30-day are only accessible for a fee. Even when you star/ pin those messages. It’s so hateful.

I do read the docs. Even before trying software, to judge if ot will fulfill my requirements… Rocky Linux is one such example. Great docs, I’d love to try their distro one day :)