>Well isn't it telling that Apple hasn't focused on thinner and lighter than what is currently available for 5 years now?

Not really. Jony Ive, chief designer at Apple for most of the iphone era, left in 2019. He and Jobs were the primary pushers behind the "thinner, lighter" drive. Once the chief pushers for "form > function" left, it predictably stagnated, and begun to fall in line with industry standards from other companies.