I broadly agree. I first joined the Greens in the early 90s but left quickly as it was so amateurish. I rejoined Labour when Corbyn was elected and left a few months into the Starmer regime. Rejoined the Greens 18m ago. I'm a degrowth Marxist.
However, I think despite Greens doing well in some 'working class' constituencies, YP will appeal to a different base.
So I see the future (if YP should get its act together...) as separate parties, collaboration and, I hope, electoral pacts.