Arch takes a lot of manual configuration to make it work, hence providing some bragging rights about using it. Manjaro is a fork that has your typical GUI user-frienly installer that does everything for you, therefore you "proudly using arch" has no substance as you did zero work.
Pretty sure these will arrive shortly after Lemmy gains any noticeable popularity. Also, fake coolstory posts for subs like AITA are coming too, people love some drama, even if it's fake