For a NEET with nothing else to do, or someone with more time on his hands then responsibility, its definitely possible, albeit probably still at least 2 years for high level competence in computer science related stuff, and higher level maths. The thing with University is, you're juggling a good 4 or 5 classes at a time, a lot of them not even STEM related for the first two years; and on top of that you're only in the class maybe 3 days in the week at most. And yes I know you're supposed to spend at least 2x of the time you spend in class studying the material.
Though this is how it currently is in a formal setting, there's no reason to believe that this is the most efficient way to really learn the information. In the 2 years since I got my bachelors in CS, I learned a lot more than I did while in Uni.
Assuming someone has the drive, there's no reason they can't get by, by watching MIT lectures, and grinding through the curriculum, hiring tutors every now and then when they need extra attention, or clarification.
>>834134
nobody cares unless you're working some boring enterprise job