A bit earlier in the vid, Art said something about having the best internet, which they had brought in, and it went to a metal box, which went to a tower that has microwave.
It sounds like Heathers internet does use one of the towers then. I could be wrong. Somebody had posted somewhere that Heather did not use the towers for anything, and therefore did not have to worry about maintenance on them.
This comment by Art leads me to think that her internet DOES depend on one of the towers. My understanding of Arts words could be incorrect of course.