You’re confusing clickbait articles with reality.

There have been over 1,200 F-35s built so far, with new ones being built at a rate of about 150 per year. For comparison, that’s nearly as many F-35s built per year as F-22s were built ever, and 1,200 is a large amount for a modern jet fighter. The extremely successful F-15 has seen about that many built since it first entered production over 50 years ago.

That doesn’t mean it must be good, but it’s a strong indicator. Especially since the US isn’t the only customer. Many other countries want it too. Some are shying away from it now, but only for political reasons because the US is no longer seen as a reliable supplier.

In terms of actual capabilities, it’s the best fighter jet out there save for the F-22, which was far more expensive and is no longer being made. It’s relatively cheap, comparable in cost to alternatives like the Gripen or Rafale while being much more capable.

There have been a lot of articles out there about how terrible it is. These fall into a few different categories:

* Reasonable critiques of its high development costs, overruns, and delays, baselessly extrapolated to “it’s bad.”

* Teething problems extrapolated to “it’s terrible” as if these things never get fixed.

* Analyses of outcomes from exercises that misunderstand the purpose and design of exercises. You might see that, say, an F-35 lost against an F-16 in some mock fights. But they’re not going to set up a lot of exercises where the F-35 and F-16 have a realistic engagement. The result of such an exercise would be that the F-16 gets shot out of the sky without ever knowing the F-35 was there. This is uninformative and a waste of time and money. So such a matchup will be done with restrictions that actually make it useful. This might end up in a dogfight, where the F-16 is legitimately superior. This then gets reported as “F-35 worse than F-16,” ignoring the fact that a real situation would have the F-35 victorious long before a dogfight could occur.

* Completely legitimate arguments that fighter jets are last century’s weapons, that drones and missiles are the future, and the F-35 is like the most advanced battleship in 1941: useful, powerful, but rapidly becoming obsolete. This may be true, but if it is, it only means the F-35 wasn’t the right thing to focus on, not that it’s a failure. The aircraft carrier was the decisive weapon of the Pacific war but that didn’t make the Iowa class battleships a failure.

In many regards, the F-35 was the first aircraft explicitly engineered for the requirements of drone-centric warfare. Its limitations are that this capability was grafted onto an older (by US standards) 5th generation tech stack that wasn't designed for this role from first principles. I think this is what ultimately limited production of the F-22, which is not upgradeable even to the standard of the F-35 for drone-centric environments.

The new 6th generation platforms being rolled out (B-21, F-47, et al) are all pure first-principles drone-warfare native platforms.