The problem, as I see it, is that a lot of hi-fi kit doesn't actually offer very much for the financial outlay or the space it takes up. 'Entry-level' seperates aren't all that cheap now, with a basic Marantz (for example) CD and amp combination costing upwards of £700 before you even add speakers, and you can very quickly wade into the thousands, not hundreds. The sound most of us experience is limited by our rooms, to the point where there is a ceiling on what we can achieve and we can easily end up spending increasing amounts of money for little substantive improvement,
Maybe young people have it right by keeping things simple. I do a 3 hour return rail journey once a week, and I use Qobuz on my phone, with a pair of Sony Bluetooth noise cancelling headphones. It sounds great, and I have a world of music at my fingertips. If I had to, I could live with it, adding one of the genuinely decent BT speakers for shared listening. Of course, I prefer being able to have my physical music collection and properly set up system, but it isn't essential.
My 14-year old stepson enjoys his music. He saved up and bought himself a record player with built-in amplifier, bluetooth module and seperate speakers. It's not amazing, but it's decent for the money and he enjoys his music, and it fits in his fairly small room. Of course, I'll be happy to guide him if he finds himself wanting something a little better, but do I want to encourage him into the rabbit holes of audiophilia? No, actually. It becomes a money, time and sanity draining obsession very easily, and there are simpler and equally effective ways of getting great sound without being drawn into exotic ideals and all the unnecessary paraphenalia. A Yamaha network receiver with a Audio-Technica turntable and a pair of decent bookshelf speakers (Q Acoustics, Dali, Fyne Audio or similar) would offer all the performance most of us need in reality, and it's easy enough to add a CD player if required. Cables? Keep it simple. If it were me, with hindsight, I'd enjoy that and stop there.
Whilst there is genuinely good stuff out there, there is also a huge amount of nonsense about night and day differences and upgrades, most of it fed by placebo and expectation bias. Do we want our young people to fall into all this, and spend money they likely haven't got, when most of them are going to struggle to afford to make their own way in the world, and when they can enjoy the music without all the trappings?