But this is my third Air. If Apple really wants to solve the issue, how many faulty Airs do i have to get as replacements? Eventually if they really want to fix the issue they will have to replace it with a pro, or else all I'll get is Airs with the same issue.
If Apple really wants to solve their issue, they'll refund your money and ask you not to purchase any further Apple products.
I find it dubious that you would get three machines in a row with identical hardware problems, when there is only one other documented case of this. It is far more likely that this is an issue that you are causing in some way. Likely a software issue.
But the long and short of it is: No company "SHOULD" upgrade a customer because they have gotten a couple faulty items in a row. A long time ago, I bought a refurbished 12" PowerBook G4. It had a faulty DVD-ROM drive. I returned it and got a replacement. It had a faulty power system. After that, Apple DID replace it with a new, rather than refurbished unit. But it was a same-specification unit, not a higher-end 12" PowerBook G4, much less a 15" PowerBook G4...
You are not "entitled" to anything. Apple is under no obligation to replace a lower-end machine with a higher-end machine, regardless of how badly you want it.
That said, you could probably get them to swap the Air for a *REGULAR* MacBook Pro (not a Retina Display model,) if you ask for that, since it is roughly the same price.
Finally, your claim that "Apple knows this model is bad" is dubious - how would Apple "know"? Because one customer has returned two of them for the same problem? That seems much more likely "something this customer is doing" than "something inherently wrong with this model." (For comparison, my wife has the same model, and has no such issue, as do millions of other customers.)