Yes. I was told this the almost as soon as I started as a PE, by colleagues. 2+ years later, having worked in both PE and SWE teams, I noticed first hand that PEs were consistently looked down upon by both SWEs and SWE managers.
Conversely, I was applying to Meta and have made it to the final stage. The interview was held with the head PE in the country. Both him and all preceding interviews clearly signaled PEs are 'the ones who do both' here, and their scarcity has made them quite valuable in the branch (according to them). It is also reflected by their salary here, which is 15% higher for interns and 50% higher as a FTE.