> "This particular issue was for this particular year, and has long since been fixed."

On the other hand, you don't have to fix a problem you haven't created.

Most of Tesla problems are self inflicted.

Moreover "Model X vehicles today is 3.5 times better than the quality of brand new Model X cars from 2015."

According to which metric?

It sounds a lot like "this is the fastest Mac ever built, 2.5x faster than the previous generation"[1] but on the market cheaper or faster options (or both) were already available.

[1] in small writings "according to bench X and taking the best result. On average the improvement is about +0.3%"