He'll flip ya...Flip ya for real...
On the other hand, you had skill points and magic items that could help you catch up in that skill during the characters advancement in 3E. 5E for example, you set it at first level and then never look back. PF2 is sort of in the middle in that you are only really good at a few things as the character advances (unless rogue or bard) and choose which feats to invest.It wasn't like in the 3e days people didn't chronically go up as regularly as was possible. All that happened was the thing you complain about in your second paragraph where the skills became worthless above a certain level (and far worse; its sometimes hard to get value out of a skill you haven't kept investing in in PF2e, but its not impossible in a lot of cases). On the other hand, in 3e (or PF1e) the skill you haven't invested in in ten levels might as well not exist. The automatic level add essentially says "We're not going to force people to play this stupid game of chase-the-level".
And I should note if you really want to avoid that, there's an optional rule to do so. Its just not the core rule, because, frankly, they decided for the routine user, its not a virtue.
Of all of that, I do prefer 3E approach, however, I do not like the roofless numbers rocket game that 3E becomes.