simply put no I don't think their N, I, L, would bring in 10k specifically.
Replace Stroud/Young with an AI generated NIL player with the same stats, and you will get the same results. Especially if you are going to have so many options to bring in pretty much any player you want. and that FREE mods will get you whoever you want.
its not as simple as saying that 30% of the player base uses these players, they need to show that 30% of the player base wouldn't buy the game unless their specific NIL was included.
and with the 10k dollar amount that would need to be the profit that single player brought in. offset by whatever marketing, development, and incorporation is included in that one player being added to the game. there are more than 5k players in the P5, even just producing the Top 10% would be a huge bit of work if EA is doing it to a point where you can saying its driving sales.