they do. The "kids dont read anymore" come from i don't know where.
they read books, book tiktok is a thing. Youtuber as well. They read journal articles online or otherwise, they text each other so... they read same for social media. Audiobook is on the rise. In my book it count as reading a book. You are aware of each line of content of the book.
The most "kids don't read anymore" come from politicians that attribute the closure of library to young people instead of amazon, policies that does not protect or recognize librarians, etc.