Why are the HP Prime and HP-35s so unpopular?

[Peet]

Both have at least as many or even more pluses than disadvantages compared to the popular 50G and 42S calcutators.
The current HP-17bII+ also seems to be a pretty good calcutator in the sum of its properties, but it hardly gets any positive mention.

From my point of view, the lack of external storage is the biggest weakness of the 35s but this is exactly what it shares with the 42s.

The prime, on the other hand, even seems to be superior to the 50g in every aspect.

What makes the 42s/50g so good and the 35s/Prime so bad?

Are these calcutators really so bad that it is worth dreaming about the past instead of wishing for improvements?