Oh you mean the part of the op that person quotes waaaayyy up in their original comment.
Yeah. The question was why does the android software that interfaces with trackers only support airtags. If you’re making a piece of software to interface with a kind of hardware your first target should be the best, most popular one. Sometimes those will be different things, like with phone charging cables. In this case they’re one and the same. Airtags are the best, most popular tracker.
So the answer to the question “why does the android software for trackers only support airtags?” Is: “airtags are the best, most popular tracker.”