You completely missed the point of what you are replying to. The point isn't that you SHOULD buy music from online sources instead of CDs. The point is that CDs aren't "the only way to buy a digital popular music in most countries." They are directly contradicting a point someone else made by saying CDs are not the only way to buy digital popular music in most countries. They even specifically said popular music, not whatever niche music some random person is into. They also mentioned iTunes because it services 119 markets, which directly counterpoints the statement about being available in most countries. They never advocated for iTunes like you imply.

It's almost like you lack reading comprehension. "Soms people here on Lemmy are even more insufferable than any other social media."