With the first contract I would almost always try and take the best extension offer as long as it was somewhere in a reasonable window. I think Johnson is a better player than JK but understand where the comp comes from and JK has been more available than Johnson. If they offered him anywhere in the realm of 4/100M I think I would have advised him to take it. The downside of having a catastrophic injury versus the upside of getting an additional 10-15M always seems like a bad risk assessment in my mind. If he gets hurt and end up on a minimum or some like 2/20M make good deal its just so catastrophic. Even if it was like 3/80M no options I would just find something that makes sense if I was JK. If they were lowballing like 4/60-70M then the "bet on yourself" seems to make a lot more sense.
Who know what was really out there of course. So I won't call anyone an idiot unless a player says "I was offered X and turned it down".
The thing about locking yourself into a long term deal is that it really cuts off a lot of earning potential. $25M a year ain’t that much more than MLE 4 years down the line. The sheer amount of money makes it so that I would never blame a player for taking it, but if they truly believe in themselves I can understand why betting on themselves can be seen as the more favorable option. In the past it seemed like almost every RFA benefited from waiting besides a few exceptions, but we’re in a second apron world now.
With JK, I probably would have been more on the conservative because the Warriors wouldn’t give him the role he thinks he deserves. But even then, I still think there’s an argument to be made that waiting it out is better. A shorter deal with Jalen’s Green structure would have been great for Kuminga, but the Warriors would never catch themselves giving such a player favored deal to him.
JK’s camp is really high on him (maybe a little too high), but they’ve been validated. The instant he got more opportunity he blossomed last season. Really, they should have worked on getting him traded if they weren’t going to ink a deal. Being in a 12 man rotation is horrible for betting on yourself.