alt Hacker NewsThe Booker was a perfect fit for the Army reqs, and filled a genuine need. But it didn't have a sponsor that was willing to pay for it. The Armor Branch didn't like it, and the Infantry Branch, which is the real user couldn't muster enough support in the DoD.
The Connie is a good ship and the two under contract will be fine vessels when they're commissioned. Frigates are no longer "cheap" ships, and the sticker shock was higher than expected despite the obvious changes that were going to be made to the FREMM design. But it's cancellation has more to do with dysfunction at the top of the Navy (and DoD) then the program of record.
Also, you're overestimating the flight hour costs of the F-35. Even the B model doesn't hit $50k. The other variants are closer to $35k/hour (adjusted for inflation) than $50K.
The Constellation class frigates had no mission. Just like the failed LCS classes before them, they aren't survivable in a modern high-threat missile environment: weak radars, small magazines. And if they can't survive themselves then they're useless as escorts.
I guess they can be put to work intercepting smugglers in the Caribbean Sea or something.