Tell me you're young without telling me you're young.
Paper towels, for most of my life (I'm old AF), were as long as they were wide. Square, they were. Bounty originated select-a-size by perforating them twice as frequently, so they were half as long as wide. Others eventually followed suit and now youngsters think that's how it's always been.
To be fair to OP, they really should've stopped advertising this as a feature years ago. It'd be like if sliced bread was still advertised as "Now sliced for your convenience!" or whatever.
How else am I to tell the difference between a full size and select a size? I buy full size for the garage and select a size for the house they serve two purposes so eliminating the standard size wouldn't be the solution.
And Bounty always claimed to be the most absorbent brand of paper towel, so the move was like saying "you only need half as much of our paper towel compared to other brands."
Not sure how actually absorbent they were; my family always got Brawny.
I've noticed that the sheets that are "select a size" seem to be using this to list a lower per sheet cost.
So if you're trying to compare prices in the supermarket it comes in at half the per unit pricing of normal sized paper towels while being the same size roll or smaller and costing the same or more.
It just feels like they're trying to cheat the system a little rather than trying to create a new product or be more useful.
For reference, this is Brawny paper towels where the sheets are perforated the other direction, allowing you to actually tear a half sheet. This is what “select a size” should mean.