I never thought Marte would get a four-year deal. I've always loved him as a player and was downright p*ssed when Anthopoulos didn't acquire him at the deadline in 2020 (Granted, I have no idea what the acquisition cost was). But, as others have said, I don't think the contract will age well.
Escobar is a good signing. He's another guy I've always liked. When the Twins acquired him from the White Sox in a deal for Francisco Liriano, the press up here ragged on the deal labelling Escobar as a "all-glove/no-hit" shortstop. It's just another example of how difficult it can be to assess younger players. Escobar grew off shortstop and turned into a decent hitter with a lot more power than was originally projected. Good clubhouse guy who can play just about anywhere on the field.
As pointed out above, the additional bonus for the Mets is it allows them the flexibility to market some guys.