Did vinyl sales just hit the proverbial brick wall?

I agree with @bdp24 that the article is poorly researched and draws dubious conclusions.

However, the vinyl resurgence will peak and start heading down soon. Yes, the boomers passing away will make a big difference. But it is also about technological progress in digital. CDs or even stored files were not remotely competitive on a sound quality / cost effective basis. That has been rapidly changing over the last five years.
 

Right now, in general, analog still wins in the budget and ultra high end categories. But in the, say, the $50K - $200K category, it is very competitive SQ-wise… and if you do only one and put your money on streaming, then the sound quality is better and the cost of music goes to almost zero, and you have access to millions of albums. That is such a value proposition that folks new to the high end would be crazy to ignor. 
 

So the writing is on the wall. It’s over… except for nostalgia buffs… the guys that do  Ham radio. There are still a few around… but not many.

Time will tell. But even if LP's return to a niche product level (even more so than some think they already are), so what? As long as they are available, those who want them will be able to get them. And there will ALWAYS be millions of used LP's, many containing music never made available on CD. As a side note: there are also plenty of albums which have NEVER been available on LP, CD only. Rodney Crowell's masterpiece The Houston Kid and he and Vince Gill's wonderful album The Notorious Cherry Bombs being two examples.

@mijostyn @bigtwin I go to a used record store every week and I never see anyone there over 40. It’s full of Millennials.

I just turned 70 and I am listing all my records on eBay. My collection is from 1969 - 2016 or so, rock, smooth jazz & jazz. I have about 500 albums and I averaging $20.00 per record.

@dill I would love to look at it. What’s your ebay name?