I have to say Vettel may not be racing just for the money, but he definitely likes the money part for sure. He is racing in a terrible car right now, barely fighting for points, you think that he would be willing to race with such a horrible team and a car, without the money part? He can't be getting into another seat where he would be getting paid more, so that is why he picked Aston Martin. If he can find a seat like McLaren who definitely needs a veteran like Vettel, and would get paid the same exact amount, he would definitely accept it. When he started out in Aston Martin that could be a price drop for him, but that was mainly because that's all he got as an offer.
Still, I think that Sebastian Vettel's prospects are quite vague in Aston Martin, despite the fact that the team management directly states the opposite about the extension of cooperation with the driver. Still, Vettel has not been successful enough lately, despite all his previous achievements and regalia. Therefore, there is probably a question of finances when the team would like to reduce the level of his salary. Personally, I'm not sure that the option with Mick Schumacher is better than the option with Vettel, given how the son of a great racer crashes cars in Haas. The option with Alonso is also interesting, but here it is worth taking into account his age.