Why are you twisting the question? This isn't what we were debating. You said a couple of things which are false:
Here's what's true: most high end earphones/earbuds are of the IEM kind because it is easier to get higher sound quality out of an IEM than it is out of an earbud. This is due to many aspects like the sound isolation, the resonance of the sound etc.
There aren't as many high end earbuds as there are IEMs because of this but there are some and many company have proven that you can get very good sound quality out of an earbud. In fact, it was a Sennheiser earbud that started me on the journey to become an audiophile. Despite being the same type of earphone as the Sony ones I had been using up until that point, there was a very significant marked improvement.
Of course I can tell the difference between an IEM and an earbud, they have completely different shapes, but I can tell a difference between multiple IEM and multiple earbuds. This whole community is based around debating the nuance and differences between different sound products but you seem to be referring to them as all part of one and the same.
I know we're not meant to be insulting to other members but I find your opinion is severely misguided and misinformed. No one on this community wants any other member to have a bad listening experience. No one. We all want each other to appreciate the best sound quality they can. If you want to completely ignore earbuds by all means you're free to do that as a consumer or just out of personal preference but to say that they are of inferior quality and can't get good sound quality is outright false and I'd advise you against saying it.
Different types of headphones or earphones had different limits in the amount of good sound quality they can get. For example the very best closed earphones don't sound as good as the best open earphones but that isn't to say that you can't get a closed earphone that doesn't sound great or has a great price and the same is true for earbuds.