“If the left is trying to attract leftist users to Mastodon, then they have their hooks in it.”
They don’t though. It is like a pickup truck. It can be used to haul conservative gold or used to haul leftist manure and doesn’t know the difference. Truth Social is using Mastodon. Is Truth Social leftist?
And yes it is truly decentralized. You can even choose and create your own network of approved trusted nodes. It really is time for Conservatives to start utilizing these decentralized tools going forward.
How do you know they do not?
Software is designed by humans and as such is designed to be controlled by humans.