First of all, there are not a single plane in the world without any issue. Every technology has their issue and limits.
Second of all, most of the issue that started plaguing the F-35 had been solved. And while some still exist, it does not mean because of that it does not worth the platform.
F-35 is a piece of technology only a few people in the know would know their complete capability. Even I have TS/SCI clearance and I don't know anything about the F-35. On the other hand, you have this kind of speculative article going around that come from a source that come from someone else. How much did these people actually know about the subject at hand before said person wrote the article should be called into question here.
In short, don't believe everything you read, I can write a lot of stuff about a lot of things, does not mean I am in an authoritative position to write such a thing to begin with. I mean these are what we called "Feel Good" article.