Yes, I think it’s a question of time and trust level. In any case, I was able to assign keywords to posts I started in the old forum that were converted here, after the fact.
See: https://community.openstreetmap.org/t/erinnerung-neues-jahr-neue-zahl-opendata-nutzungsbedingungen/92007
I can no longer edit the post text of my created post myself… Only time will tell whether there will be a need for this.
Sven