Back when Dish Network first began offering two-way Satellite Internet (Gilat- Later Starband), I became acquainted with a "Computer Illiterate" Dish dealer who need help setting up the system supplied to him by Dish Network. Subsequent to that, I assisted him on numerous
installations.
Because many Dish Network dealers had gotten used to "roughing in" their alignments, the same carried over into the Internet installs. After awhile, the dealer received notice from Dish that they were suspending ALL such installations until every authorized dealer could pass a required installation qualification test. They enclosed copies of notices that they'd received from the FCC that many of the intallations were interfering with neighboring commercial satellites. The FCC was threatening to stop Dish from offering any further installs unless they corrected the problems.
Given the fact that many users are moving their antenna systems after the original install, especially those bringing units to Baja from the U.S., I am surprised that there aren't many such complaints. For most people, the usual course is to get a useable signal and call it good.
Since I'm no longer involved (except as a Hughes Net user), I don't get any of that "inside" info any longer so, perhaps, it is still a problem.