It's typical for companies to do this - deny, deny, deny ;-). I have a fairly new Samsung Convoy 3 flip phone (yes, I have a flip phone!), and the texting font size is miserably small. I would bet a simple firmware update could fix it, but they don't want to invest company time for a firmware update on a low margin product. Many people on the forums I've read complains about it, but when I contact Verizon or Samsung, they act as if no one except me is having the problem.
A few years ago, 1st generation Toyota Tundras had a defect in frame rust-proofing. I was thinking of buying one until I read extensive threads on Toyota forums about the problem. Almost everyone posting about the issue on Tundra Solutions said when they took their truck in to Toyota, they acted like their case of a frame rusting through was the first they'd ever seen. Eventually, Toyota couldn't hold back the avalanche of people with trucks that had rusted through frames and issued a recall, replacing complete truck frames at huge expense to them.
I don't think we're talking something as serious here, but it shows what companies can try to do in the face of a large amount of customer feedback, though like it's been said, it's hard to know the true percentage of Air 2s sold that have the problems because there are a lot of happy customers out there that aren't going to post anything.
I'm sure Apple has been down this road before and is working on something in secret, so to not spook potential new customers (like myself). If they were to officially admit these issues with Air 2 and word went out, the new customers would wait for a definite advertised fix, or just wait for the iPad Air 3, especially since a lot of folks think the Air 2 might not be worth the upgrade from the original Air.