Because by then the singularity will most likely have occured and aging will probably be as much of an issue like a common cold, there will be more people able to answer questions.
You're not required to get a degree to answer questions on this sub anyway, you just need to be able to write answers which follow the rules. While it's true that while getting a degree you learn skills which help with this, it's not difficult to write good comprehensive answers without one.
You don't need a degree to answer questions here now, just familiarity with sources and the ability to answer follow-up questions. Our subreddit rules explain this quite well.
I couldn’t agree more /u/Abrytan. Degrees can help, but aren’t essential. I have a BA and MA in history (my MA focusing on religion during the Revolutiinary period), but I’ve seen plenty of great answers from people without history degrees in my field. I’d argue that it helps to have read a bunch on these topics, but it’s honestly not that hard.