Very unfortunate, I'd be very mad. I'm actually amazed this doesn't happen more often in labs.
I think
@das' point is valid, it's partly driven by the current market and high prices for (color) film). A second aspect in my opinion: it's somewhat of a fad. People who get into film these days do not want accurate color reproduction, they want a distinct character/'vibe' in their photos, a cinematic look. I understand that to some degree, you see so many clinically sharp (or distastefully over processed) digital photos every day...
Online research then quickly sends you down rabbit holes, you end up on expert blogs or YouTube channels where ECN-2 films are hyped up (by people who know how to use them). Without understanding the differences in developing, they opt for whatever is trending, because that must be the best. Same reason why so many beginners go for top shelf cameras as their first ever film cameras.
It may sound like gatekeeping, but it's not. I was one of those people 7 years ago, bought a Leica M2 and a 50 Summicron as my first film camera, and 5 rolls of Porta 400 as my first film...
(Though, in my defense: my entry into film photography was a loaned Leica M6 with a 35 Summicron, plus 50 and 75(!) Summiluxes... took me a moment to figure out what the value of those was, I then gave them back quickly out of fear to break anything. But once exposed to such quality, the Leica bug had bitten me.)