What annoys me about 2:1 is that it's so close to 16:9 that it won't make any difference to filming.
"cinematic" thing about it is that it adds black bars and makes you go "ooh, not all of my pixels are being used, how cinematic." And those black bars will be half the size on a TV that's still set to compensate for overscan, as they all are by default, which makes the whole exercise even more pointless.
Star Trek Discovery: Season 1 was in 2:1, but Season 2 will be done in 2.4:1
Not sure whether I like the idea of 2.4:1 or not for
but at least it's a big change from 16:9. That
mean different choices by the director/cinematographer.