We understood what the GP was thinking in terms of ads. The objection is that any form of advertisement, regardless of how tasteful it might be presented, is the polar opposite of the intended purpose of tranquil windows into nature.

People like these kinds of live streams because it offers a relaxing form of escapism. Dumping even a static ad only serves to add distraction from that atmosphere and thus undermines the very point of having the live stream open in the first place.