"Would people even pick anything related to computers?"
Computers, the versatile tools that they are, will play a part in many of the cutting edge endeavors, I believe. At one time the ambiguous quality of 'good with computers' was what it took to get a nice office job. Industry has focused on more specific qualities given the ubiquitous computer use.
I think I hear what you are saying, though. My career/retirement transition looms, and, no doubt, faculties and endurance are well crested - different options need to be analyzed. Ideally I'd salvage skills I've already learned to cobble together some late term career. The highly mutable marketplace makes choosing difficult but does provide an ever present opportunity to get in on the ground floor.
Machine learning leapt out of the gate but many furlongs remain. Perhaps the AI industry would benefit from the old world perspective that these young whippersnapper grads can't provide. I still like 'Smart Contracts', and their potential to insinuate into the marketplace and society at large. All risky stuff, though. Apparently the choices we make as older adults are no less speculative than those of marketplace newbies.