What makes you say Degoogled Android might go extinct? Projects like LineageOS and GrapheneOS are still going strong. /e/OS, murenaOS, VollaOS and other similar phones have been coming out of the woodwork recently. I think DeGoogled Android is just getting started.

That is, unless, you mean Google is working hard to close down AOSP so the downstream DeGoogled projects don’t function anymore? Then yeah, I sadly have to agree.