You really should say something in an opening post.
As to the claim
Not your grandma's Shostakovich: How classical music is attracting younger audiences
I call bullshit.
He does not qualify nor quantify. The writer simply expresses his opinion. An opinion formed by his wanting to believe. Cherry picked data which one could do to say the opposite.
It is not bullshit. Young people are suddenly turning to classical music in droves. I think it is because of easy access from streaming. That is what I think is happening.
The rock pop scene is just junk program from top to bottom, and now the fake facade is getting called. All concert halls are noticing a big drop in the average age of audiences including here in Minnesota. I stream lots of concert from around the world, and I notice an increasing lowering of the age of the audiences.
The other factor is that the atonal music of the new Viennese school is dying the death predicted by Sir Thomas Beecham. He stated that "not one nth part of it will survive." It has taken a while, but now we have composers around the world writing music that people, and especially the young, wand to hear. The applause is now deafening for this new music and not the polite applause for the awful rackets we have been exposed to for a century. Serious exciting music is back and with a huge following.