There are instances that bump up the max length. The word you're generally looking for is "glitch" (instances will say they're running "the glitch fork" or "glitch edition" or will have version numbers ending in +glitch, which has a few features on top of regular Mastodon), although some regular Mastodon instances may also increase the char count the hard way.

Alternatively, Firefish/Misskey by default has ~3000 characters but it's a completely different experience altogether (although it still federates with Mastodon (like kbin and Lemmy)). I'm not exactly sure on how Akkoma instances are usually set up but that's worth taking a peek as well.

Of course this doesn't address the politics stuff but that's more on you to curate your own experience.