I loved my 12" Powerbook, but I recognize that the size/weight tradeoffs make somewhat larger laptops more desirable these days. For example, the bezels are much smaller, so a laptop that has the same size footprint as my old 12" PB would actually have a larger screen. Laptops are also much thinner now, which means that part of what I loved about the 12" PB (it's relatively light weight) can now be achieved in a larger form factor.

That said, I do also use and enjoy my 10.6" iPad Pro with magic keyboard. It's unfortunate that the keyboard has to be so heavy, so the whole thing doesn't tip over. It doesn't end up being much lighter than my 13" M2 MBA as a result.