Use the newer existing topics to contribute, and use the older ones (e.g. the 5 year old) for background only since some parts might be outdated. In the referred topic, it was politely pointed out that the topic wasn’t new.
I think that is a good way to interact without completely silencing users, so they can still answer and say why there issue matters or is different to the other references and a dedicated topic is justified (90% it is, but sometime we mods are also wrong).
We have so many repetitive topics, we need to consolidate a bit so that discussions don’t diverge too much. And we try to lead discussions in a way to improve things and to be constructive.
We don’t want to censor, there is a lot of criticism here and we need it to improve Nextcloud. Well, if it goes to out of hand just ranting or starting to insult people, we have to interact.