No it isn't split left or right, anyone can join it and anyone can stay on twitter.
The diference is it is lime twitter pre musk so it isn't full of AI bullshit, ads, pornbots and american politics or stuff you never asked for.
If you want to engage left and right politics you can if you don't want to be bombarded with Yaxley-lenon fans or crackpot communists it won't be forced upon you like is happening.
Best thing is I have not read one 115 post by some idiot in chiswick, michigan or gambia or a shithawk journalist looking for clicks