Just to add, if they were thinking of dropping "Jehovah" in order to mainstream, you'd think that they would be getting people used to it by using "God" more. A post just this week pointed to an article put out by them with "Jehovah" as virtually every second word*. They may have thought of it, rejected it and are doubling down to make sure.
But it wouldn't be the first time they've apparently doubled down on something, only to unceremoniously drop it later. Although the "later" usually is a couple of decades or so...
* https://www.jehovahs-witness.com/topic/4697143395221504/june-2024-study-watchtower