Firefish (Mastodon-compatibile microblogging) has a view called "Recommended", which is like "All" but shows posts from only federated servers that the admins recommend. It's a great feature and would be welcome on Lemmy.
In the meantime, I've blocked the two Reddit repost bot accounts and have been just fine since.
I don’t personally find these bot posts useful, and I think they clutter up the All timeline, but they aren’t being deceitful or anything, and there may be folks who find these posts useful. I like the lemm.ee federation policy of generally allowing everything unless it’s full of bad actors.
Why is Pixel Pass being discontinued?
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You can ask the sportsbots.xyz admin (@sportsbots@mastodon.social) to add specific accounts. The posts propagate pretty quickly from Twitter, and you can have them either on your main Mastodon/Firefish timeline or a dedicated list. The downside is that you don't get the Twitter replies, but those are mostly garbage blue-checks now anyway.
Many instances have disabled uploading images due to an recent attack on Lemmy servers. You may want to check your instance's "meta" community for any announcements about that.
I had the same experience. I had to use the lemm.ee default web interface to block the two repost bots.