I don't think it's going away until ECMA supports native types. Until then it's the best game in town.

If a team decides to move away from it, it's only few hours work to entirely remove. So even if it's going away, it's risk free until then.

But I cannot imagine why any team would elect to remove Typescript without moving to something else similar. Unless it's just a personal preference by the developers who aren't willing to learn it. It removes so many issues and bugs. It makes refactoring possible again. I think teams that want to remove all types are nostalgic, like a woodworker who wants to use hand tools instead of power tools. It's perfectly fine, and for some jobs it's better. But it's not the most efficient use of a team to build a house.