They may not tell you straight away, but it's " they're losing ground to the like of PSG, due to FFP is this useless". Remember their model is based on getting the best players there is. Competing with oil money in long term is impossible with self generating revenue, and the way CL (TV) money distributed.
I think there is truth in this. We all heard about this article
https://www.bbc.com/sport/football/41695802.amp
So it costs a lot to try to go deep or win CL, but UEFA formula to distribute the money may leave the winner with less money than a lesser teams. In other words, those cash cow teams for UEFA ain't paid fair enough for their contribution. It's tough enough to compete against oil money(1). A few misstep season (missing out CL football), may be the beginning of the end for them, with them not generating enough revenue for their expense for their ambition.(2). Teams that draw huge crowds yet not playing in the most prestige competition is waste chance to make money for not only themselves, but other teams in the competition(3).
These 3 points are the key point of this ESL. The TV money will be distributed fairly based on contribution (attracting more crowd). Popular teams are ensured entry, so they can have money to upkeep their teams (in reality among these teams there are some teams, that don't want to spend all the money on their teams); and their popularity would help boosting the profile of the competition, thus earning more money for them, and other teams in the competition.