So why are 57% of new vinyl sales to young people as evidence above in a subsequent post by the very poster you quoted
It is absolutely not what you are saying, it's far more complex than simple statements of this is dead, thats dying out, this will takeover, that isn't happening any more. And as it has been since the 50s it is the younger generations that consume the most music product and sales in the sector are growing. Different formats suit different people.
Vinyl sales are actually artificially low right now, there are so few pressing plants left, they have a backlog and you have to book your pressing slots nearly a year in advance. CDs have a much higher profit margin than vinyl but it is vinyl that is pushing the sales. People are still buying downloads for certain markets, it's the only place you can get the product. CDs are the only alternative for people that want physical product. A friend released an album on CD just before Xmas, it's beautifully packaged in a book, its taken them ages to get that out because of the pandemic and the vinyl is still many months away, the CD is the only option for some. Another friend is in a band, they sell their home made CDs at their gigs, it's how they make money.
It isn't a case of any of the formats dying, they are just finding their levels