It’s been well over a decade since I’ve dabbled in this sort of scene, but it was stupid common for “ecstasy” to be adulterated with other substances (often miscellaneous amphetamines) in my region. Everything, mixed or not, would be sold as ecstasy if in tablet form. You’d generally have to look up the pressing on a third-party site to check for quality, if you didn’t test yourself (my friends were young and broke). This was in a major coastal city in the United States, for reference.

Not trying to say you’re wrong, but just relating why the previous commenter may have had their impression.