Thanks for the positive thought, Aaron. To answer your question, my recollection is that migration from yahoo to google was up to the individual. I have no idea about numbers. I would note that club rosters (both FSF & STS) are confidential, for members only. Long ago, members decided that all that personal info should not be public info. In the case of both these clubs, the list of members changes monthly, as some come and some go. If there's not much group communication, it may well be more a function of little flying activity due to a pandemic, climate change, and fewer pilots. Besides, look how long it took me to wade through all the communications posted just to get to yours. ;-) Efforts to promote the sport are sorely needed and your suggestions are appreciated. It would be nice if progress were made resuscitating local instructor pilots as you've suggested, for example. As to FSF communication problems, I think providing access to the google group through the club website designed by Romano might make it easier to opt in.
PS Thanks for bringing Rocco along!