I always find this such a weird claim. Sure, lots has happened in the past 5 years, but there's still tons of software out there that's older than 5 years, most major programming languages are decades old, and anything new can be learned.
If you want to be able to make money quickly, it's far more interesting to look at what you can do, than worry about what you might not yet know. Python is still around and still as relevant as ever.
> I'm in my early-to-mid 30s for reference. I'm not really able to get off disability as the condition is severe.
My personal opinion is that if your condition is that severe, you shouldn't have to work at all, but of course that's of no help to you right now.