This has been happening for decades now. Even in 2000 you could pay a hosting company $not-much to give you a basic templated site hooked into a payment server. It didn't work all that well, but it worked well enough to provide the commodity service most small business owners wanted.
I still see people saying "You can't automate this" - when magic AI automation isn't even needed to do the job and the job is already being done.
Of course this kind of no-code won't build you a complete startup. But how often do you really need a complete bespoke startup? For a lot of business ideas a no-code service with some simple customisation and a very basic content engine is all that's needed.
You do not need docker etc for any of this. Or at least, you don't need to deal with docker personally for any of this - just as you don't need to deal with your web host's VM technology.
So while I don't completely agree with OP, I think it's astoundingly naive to believe that the current level of hyper-complexity cannot possibly be shaken out.
In fact current stack traditions are almost comically vulnerably to disruption - maybe not this year, but I would be amazed if the landscape hasn't started to change within ten years.