alt Hacker NewsThe existence of solutions to problems does not prevent you from solving the problems yourself anyway, if your goal truly is personal development. You're free to go solve Navier-Stokes yourself right now. You're free to manually do all of the AI work in any field, actually. You won't get grant money or prestige (which are not a part of conceptual understanding and insight) but you will get all of the conceptual understanding and insight you're after. You have not been deprived of it.
Except most people that get actually good at a field do so through their day job. By removing mathematician as a viable job, most can't afford to spend the necessary hours to become a good mathematician at all. We're going back to only rich people or those with a rich patron having a chance of developing themselves.