I mean they did switch from objective c. At some point they might switch again if it makes sense.
I mean, after some almost 40 years. If 40 years from now, hell, even 20, Apple abandoned the language I’m not sure I care about the risk.
And that’s not to say they don’t support objective-c still. It just hasn’t been actively developed with new features.
Especially if the promise of coding agents porting between languages is even partially realised it could make it very easy for them to switch.