Exactly. A team would be dumb to pay a premium for a small window of time when you can just trade for him and then buy out his 2 arb years or give a big extension. Also, Crochet might agree to a deal that buys out those 2 arb years, but he ain't giving up a year of free agency when he's set to be a FA at like 27. He would sign a bigger deal than that.
Glasnow example: how much more did the Rays really get in that deal for the Dodgers opportunity to pay him $150M over 5 years? Really don't think it's that much of a difference. It's not adding that much value to it.
I think some people are reading way too into Crochet's extension comments around the trade deadline where he was trying to leverage himself pitching in the playoffs in a year he was way past what people thought he would pitch innings wise for guaranteed money.