Google has basically thrown the towel in the ring when it comes to C++ considering they're building a replacement like Carbon and also using rust in and more places so they're likely pivoting to those two instead

I mean no, if you're happy at Google doing C++ then by all means you can probably keep doing it for a while. I don't think pivoting is particularly hard for experienced devs, so it's probably fine to hold it off, though I could be wrong.