I was thinking about this from another thread (the Helix one).

Initially, learning Helix broke my ability to use Vim, but now I flit back and forth between Helix and IdeaVim without thinking about it.

Similarly, I switched to a split keyboard at my desk with lots of customizations, and it initially broke my ability to use my laptop keyboard, where there was a several minute adjustment period every time I switched, but now I can jump back and forth without making more typos or typing slower.

Both followed the same curve for me: learning the new thing disrupts the old thing, but if you do both enough, your brain/body seems to distill the shared core of both just fine.