Again, us MacRumors forum members tend to be a picky bunch. I know several folks who still use older iPads (2+iOS 9, 3+iOS 9, 4+iOS 10, Air+iOS 11) and find their devices quite adequate if a bit slow when those would've driven me to distraction. Interestingly enough, my 50-tab browsing doesn't appear to be common behavior in my circle of acquaintances either.
Mind, I find reloading isn't quite as annoying when the device has fast enough CPU/GPU/storage/internet to accomplish the task fairly quickly.
Also, as mentioned, iPad Air was the last iPad to get 1GB RAM. While the Air 2 certainly did hold up much better over time (felt just as fast as launch even after 2 major firmware updates), the Air actually fared better than I expected it to. At the very least, for light usage (web browsing, email, etc), the Air is faster than a lot of PCs that still use spinning platters.
Very true. Most iPad owners I know are still using an Air 1 or older. Why? Because they still work fine. They don’t even know or care how much RAM their device has. For most users an iPad with 2 GB of RAM will still be good for a number of years. For more discerning users, there’s the Pro line. That’s the whole point.