You can also look at long-term API mining sites like worldofwargraphs, which show things like 40% of the playerbase consistently clears Heroic. Throw in Normal on top of that plus people who do some (but don’t clear) Heroic. That’s a majority.
The data CLEARLY shows that most people raid, and has for years.
It’s the “barely anybody raids” crowd that can’t back up their statements with any facts.