The Mets may well fail spectacularly but I think these medical disputes are generally just gamesmanship. Correa has been no less durable or more injury-prone than Harper, Hoskins or JT. And as we've seen all kinds of teams are taking crazy risks on pitchers with injury history. How would Eflin even pass a physical, per se? What did the Giants see that the Twins didn't last year? (I doubt it's a new issue.)
There is no way the Giants wanted this to end with them going 0 for 2 on star free agents. But they gave Boras an opening and he wasn't willing to negotiate with them. He said execute the deal we already agreed to or I walk, and then he walked. I don't think that's what SF wanted to happen, they expected to simply agree to a re-structured deal, and didn't think two teams would get back into the market so fast (and that one of them is crazy).
What's crazy about all of is it the Mets could succeed incredibly, and then, as with last year (for the Dodgers too) still get nothing for it.