There seems to be assumptions that we have satellites. Yet, no real proof that all communication isn't groumd based.
You should be looking for positive proof of ground-based transmission, not negative.
I have on a number of occasions invited CTs and FEs to actually PROVE that satellite TV broadcasts ARE ground-based, as they claim. The experimental method is simple; find a portable satellite reception rig, a battery-powered one, such as would be used by a mobile home / RV / caravan owner, and take it to your ground-based transmitter of choice. Walk around the transmitter, pointing the satellite dish at it, from North, South, East and West, or angles inbetween. With a direct line of sight, and close proximity, the receiver should receive satellite broadcasts in the highest possible quality from all directions. Optionally, you can look for programming that is exclusive to the satellite broadcaster's channel selection, and which cannot be found on regular terrestrial broadcasting.
If you don't get a signal, when you're looking directly at the transmitter from a few yards away, that would appear to suggest the satellite broadcasts are not coming from your ground-based transmitter of choice, and you need to look elsewhere.
Anecdotal comment;
I'm old enough to remember the days of exclusively ground-based TV transmission in the UK, and I know where my local transmitter is. I also know the direction in which my satellite dish is pointed, and that's in the opposite direction to the local transmitter. Whilst every terrestrial aerial I have ever used at this house has been pointed North-West, my satellite dish points roughly South.
Look at google street view for any of the towns on the Southern coast of the UK, and look at their satellite dishes. They all point South, out to sea. Where will the ground-based transmitters be? They will be further inland, on high ground, to the North of these towns. So they're not pointed at the transmitters either.