They've been pretty ok towards e.g. making your CSR tool interface with twitter to answer support requests over Twitter.
This doesn't really strike me as a change in direction, though it does look easier for people in the second category to get started.
There doesn't look to be.
I think it has been updated in the last few hours - they've added a link to a trello board created 4 hours ago, and I don't remember a [COMING SOON] replacement for home timeline being there previously. So maybe they're going to add more endpoints than currently exist, but it'll take a lot to not have people worried about another rug pull.
As a cry to stop this tyranny things like "app.net" were proposed. Then few years after that mastodon and a bunch of others which are not around anymore.
When I was using Twitter the most, I finally installed the official app after using a few clients over the years. Now when I use Twitter it is only to broadcast tweet and I just use Firefox on Android using the official mobile site.
After messing with Twitter in a number of different ways over the years I decided it isn't worth it. There are a graveyard of open source clients which talk to twitter over api v1 in all languages.
Also did you hear they can just ban presidents?
https://www.cnn.com/2021/01/08/tech/trump-twitter-ban/index....
https://www.remarkbox.com/remarkbox-is-now-pay-what-you-can....
In any event, they can ban anyone at any time. Their platform is private property, for better or worse.
I'm saying mastadon isn't my first try to help people leave the censored platforms. I'm currently building a couple myself!