Yes

Yes, except not the first one bc it’s on Lemmy.ml.

yep, but identical link posts are grouped on my mbin instance:

i kinda love it. i can see which one most users are commenting in, etc.

When I started on Lemmy after the Reddit exodus, I started by browsing by All, subscribing to communities that looked interesting, and blocking communities that I didn’t want to see. I figured I’d eventually move to browsing by Subscribed, but more than a year later and I still browse by All. Removing the communities I didn’t want to see, especially the overly prolific meme communities, and blocking the posting bots has made browsing New just fine.

So I guess I see duplicate communities assuming there are posts and I haven’t blocked them.

Aye.

Yes with the exception that I block every single .ml community. When I post I generally choose the most popular one.

yes.

Yes, but I only post to one at a time.

“Duplicate”/competing communities is not a unique thing to Lemmy or the fediverse. Reddit had multiple competing communities for the same topic–different management.

Just apply the same rules.

Yes and it’s annoying. That disperses even further the already small communities

yes

Yes, it’s kind of amusing you didn’t cross-post this, in fact.

How many times do I have to answer this question!?

Yes

Several, and thank you for making me aware of those in the OP, I was until now only subscribed to one of them.