Yeah stack exchange is proprietary, but community there extremely care about quality. on the other hand, it is common in Lemmy to post one liners, poorly reflected, unrelated, irrational good feel answers. And it is filled with extremist crazies & bad faith actors. Also keep in mind, when contributing to federation platform that you are also giving more voice to extremist crazies, but IG it can be overlooked if other platforms are censoring basic freedom of speech.
I see that you are not familiar with posts being closed on StackExchange. It means you can’t reply anymore.
I am familiar with this issue, they are are marking questions as duplicate when actually they are just related questions. And users intentionally not up voting. but at least in SE users are in good faith, encourage good quality answers & avoid duplicates.
I was talking about, this post being duplicated 4 times