I wonder why languages lost that form, because it seems really useful to have a single verb for those.
I am not sure, but I think it’s due to the changes in the passive. Latin had proper passive forms for plenty verbs, and a lot of those verbs handling states were either deponent (passive-looking with active meaning; like irascor) or relied on the passive for the state (like terreo “I terrify” → terreor “I’m terrified”). Somewhere down the road the Romance languages ditched it for the sake of the analytical passive, sum + participle.
I’m saying this because, while irascor died, the participle survived in e.g. Portuguese (Lat. iratum → Por. irado, “angered”). And it got even re-attached to a new verb (irar “to cause anger”).
From the thread:
I think Reddit is trying to hide that most users don’t actively engage with the content there, they only passively consume it, and that this will likely get worse over time. In other words: subreddits aren’t communities any more, just random assortments of junk for you to consume.
The following comment confirms it for me:
On another matter…