Barrier to entry is a real thing. And it absolutely affects who enters a hobby.
The barrier to entry to be DM in 1982 was very low - some graph paper, the monster manual, and a couple hours before the next game session. Which is why millions of young kids played the game back then (it's also why it was common for kids to play 3-4 times a week then too).
I know people who did DM back in school in the 80s, but after immersing themselves in the world of online advice channels and lives streams today, lack the confidence to DM. They feel they need hours and hours of preparation, and need to master a host of skills they didn't think about when they were 15, in order to be a good DM today. Those higher expectations haven't made them better DMs - it has made them too intimidated to DM at all.