I’m a few years ahead of you and I agree with a lot of what you say here, especially the hype. I started out writing in C on various flavours of Unix, a technology combination that is still going strong. I’ve seen a lot of technologies appear, become the ‘latest fashion’ and then disappear from sight.
As this article says, choose your Galaxy carefully. If I were to recommend a currently ‘sexy’ technology for someone to learn about, I think it would be Docker. Containerisation will be around for a very long time.