100% this. Some will still gobble this rumour up though - confirmation bias.
We are not in the CL and currently are the 5th best team in the PL. We don't compete for the biggest honours and haven't for a decade. Can you honestly say that Mbappe would join us (unlikely anyway) for any reason other than money with all that considered?
Not only that. The way Ten Hag is trying to build, the striker plays a massive role in pressing.
If you watch Martial, he looks where everyone is on the pitch before pressing and in the last 2 games, we had a high % of turnovers compared to when Ronaldo plays.
Now, a player like Mbappe who we all know wants to play for Madrid, is only here to make money before Madrid say, yep, we will take you now.
I rather spend that money on 2/3 players to improve the whole team.