This really doesn't add much since I see you're in Beaumont. But here in Conroe at least, the talkgroups local to me seem to be accurate. Not a whole bunch of day-to-day chit chat, but when storms roll through, they do light up for sure. Again, this is just my location (Woodlands, Conroe, Willis sites). I wouldn't imagine them changing talkgroups very often. They seem to only really use the radio during outages and major events when "officially" cutting in circuits, verifying line status, etc.
I haven't updated my G4 Entergy zone for at least 2-3 years and nothing of note has changed on this end.