I spoke to someone at AT&T who told me there will be no Directv as we know it in about 5 years. This is the time the last satellite launched will start failing. They are working with cell phone chips from AT&T to modify current Directv equipment to work with 5g.
Do you really believe the random CSRs, salespeople or installers know anything??
The core fleet will be good until at least 2030 or so. There are a few older satellites that will be retired or phased out in the next year or two, but none of them are used by anyone with an HD receiver.