Can't speak for millions of Indian users, but for the entire independent news media infra of India that's on X, I think they're not moving because their readers refuse to move--closed loop. Their existence in India is precarious under state repression, limited funding, they're afraid of vanishing.
'There are voices from Palestine there but not elsewhere'
Fine: help them get off the white nationalist website
'Global south communities are huge there'
Fine: help them get off the white nationalist website
'Political influencers are there'
Fine: help them get off the white nationalist website