You haven’t presented an argument, much less a convincing one. You’ve just made an assertion.
That's exactly what you did. And your first assertion was to imply that most of the followers were non humans. It's not plausible and I pointed out why it is not plausible.
And now you try to rescue this by asserting how those followers are not actually customers - which is a different claim, btw. You shifted the goal post. I am only arguing that it is normal for creators of popular projects to have many (human) followers.
Of course we cannot prove that a particular follower has bought something, or is a happy customer or a human. But the fact that we cannot prove this, does not prove the opposite. But we do know that the follower metric correlates with success, popularity and sales. This of course does not prove that any particular developer did not fake followers, but the mere theoretical possibilty also does not prove that it is so.
Another ai asset seller on top of those lists has 400 followers and currently a sale that shows how many purchases were made. 845 contributors as of my writing with nearly $ 10k.
There is a market for ai assets. And if there is a market for something, there will be people that follow the "good" creators, instead of the "bad". Those numbers correlate. We do not know the factor, but if one goes up, the other goes up too. One does not get followers just by spamming projects. That's what the slop creators try to do. And that is why they are so annoying.
But this does not mean, that all the creators that use these things create slop. There is no direct causal connection. Just as there is no causal connection of using human made assets and thus your works are automatically not slop. Slop means low effort. The lowest effort is using free assets (no matter if ai or human made).
Maybe it makes you feel better, if you look at the follower counts of human ai asset creators. Those are about 10x as high. And both of the ai sellers are currently high in ranking because they have a discount sale. But they do have a market and it logically follows that they do have real followers because of that.