For computing and the internet I think the author is spot on. The late 80s to mid 2000s had that these kinds of features. For electronic, rock or punk it was probably the 60s to 80s. I don't really like the relativism of writing people just off as nostalgic in this case funnily enough applied to both people too young or too old.
There really are time periods that suck and some that don't. An interesting observation is that there are very few, if any Gen Z hackers or founders comparable to say Carmack or entrepreneurs like Zuckerberg. Virtually every tech company today is run by Gen X / Millenials. Maybe reflecting that the "product culture" Gen Z grew up in has resulted in not very technology oriented social media businesses.
Maybe a little bit uncharitably put we went from young people writing Doom and PageRank to bored ape nfts being hustled on Discord servers.