The NY Mets are not punting on 2024 because they've shown a willingness to be in on one of the most expensive free agents
The Mets simply being in on Yamamoto can be a sign that they're not punting. Yes, it does look like it's Yamamoto or bust right now, but teams don't consider spending around or even over the $300 million Yamamoto is going to get only to then do nothing.
If they get Yamamoto, the Mets will presumably be ultra-aggressive as they try and improve the ballclub. A lot of work has to be done, hopefully David Stearns is up to the task.
If they don't get him, it's hard to know what'll happen because the Mets haven't really been connected to anybody else. Still, it's hard to expect the Mets to put up roughly $300 million in a Yamamoto bid and then just put the money in their pockets if they miss out on him.
The Mets are going to improve the roster. How far they intend to go when it comes to improvements remains to be seen, but some sort of moves will be made. It'd be shocking if they sat on their hands if they missed out on Yamamoto.