The tablets are. Buy an iPad, then spend like $600 on hardware accessories and apps to basically turn it into a laptop. Everyone I know who bought one has just left it around the house as a random toy.
But I'm a heavy user, and that 2015 baseline MBP is still fine.
I think both are true. For non-tech people, or people who don't use a computer for real hard work, who want a decent laptop, they probably just buy the baseline Air. But once you get into doing some more professional stuff on a laptop that needs power, then you fall into talking yourself into more than what you intended. I am experiencing that right now. At the time I didn't have a lot of money, working full time to support a family and going to school, so when I needed a new laptop I got the base MBA M1. Fantastic laptop. But now I am doing more intensive stuff (I also make a lot more now so I can afford it) on it and I am looking at upgrading to an M3. I am playing with the GPU and some ML, so I probably should get more than a base model M3. From there it is, whatever I decided, the next upgrade it just an extra $200. More ram would be nice. Oh wait, for another $200, I can also get the better processor with 2 more cores for CPU, GPU, and Neural Engine, why not? Oh wait, $200 more and I can double the RAM. Next thing you now, I started off with $1599 and now have talked myself into a like $2200 (haven't made the purchase yet, but that is what I am looking at).
You start with the idea of cheap model, then start going the ladders up.