Some of what you are saying makes sense, but a lot of it is ridiculous. I will explain this like I am talking to a third grader.
Kingdom NIL doesn't have a lot of money. Transfers enter the portal for one of two reasons: money or playing time.
Amari Kight entered for both reasons: money and playing time (in that order). Kight is the most expensive transfer in UCF history. Kight's situation is analogous to UCF giving NFL first round draft pick money, while a lot of these other transfers are getting the league minimum (a scholarship).
Kight is the best transfer, but he should be based on his NIL value. Kight is a poster child that Kingdom NIL works. Unless you are giving hundreds of thousands to NIL, you should not complain about the product.
Furthermore, you can't--and shouldn't--expect players looking for playing time to be as valuable to your program as NIL guys like Kight. You should expect them to be contributors, though.
Here is where you have a point. UCF whiffed on Rian Davis, Isaiah Paul, and Shaun Peterson Jr. It destroyed the front seven. Those mistakes are unacceptable and cannot happen.
Transfers should not be your best players. If they are, you are doing something wrong with your program. Transfers should be contributors. The guys I mentioned, along with the wide receivers, were not.