We did, it resulted in smartphones and tablets, so what the OP is saying applies still. I would argue that's "general" computing now. They finished what the webTV started, providing a basic platform for people who had only very basic needs.
Smartphones and tablets are trying pretty hard not to be general-purpose computers. iOS devices don't run arbitrary user-specified code unless hacked, and many Android devices are designed not to let the user have real admin rights (i.e. root).
This seems to be getting worse, for example Google and its financial institution partners have decided that general-purpose computing and payments aren't safe together. Google Pay suddenly started refusing to do contactless payments on my rooted phone.
iOS devices can _run_ arbitrary code without being hacked. It just stops working 3 days after being compiled so its good enough for kids to develop on but not good enough to distribute.
> How about making _general_ computing devices more accessible via UI/UX to the _general_ public?
While I agree with the sentiment, and some of the complexity is not essential, the adage still applies: "everything should be made as simple as possible, but no simpler". At some point, "general computing" means there's some irreductible complexity that cannot be made simpler without the device ceasing to be general purpose.
> How about making _general_ computing devices more accessible via UI/UX to the _general_ public?
That's pretty much what the iPad is. A general purpose computing device but easier to use and with tighter security than a PC. At some point you end up sacrificing versatility for accessibility to the masses.