Then mods/admins of a more recent instance infiltrated the successful community and convinced existing mods to shut the main community down and move to the one on that new instance. Now all that is left is selected news and orientated propaganda.

There's something I don't get in this scenario: why didn't anyone ask the mods of the old community to reopen it, to act as an alternative to the new community?

Another case in hand is the 196 story

• !196@lemmy.blahaj.zone mods wanted to move the community to !196@lemmy.world without asking the community first
• A bunch of members organized and created !onehundredninetysix@lemmy.blahaj.zone. They posted about it on !yepowertrippinbastards@lemmy.dbzer0.com and other meta communities, allowing people to join on the new community while avoiding potential censorship from the original mods

!onehundredninetysix@lemmy.blahaj.zone is now by far the most of the three communities. It showed that having the option to reorganize elsewhere is good, but also that usually people will just consolidate on one community.

What prevented a similar reaction in your scenario?