I believe it is going towards JIT being disabled, or most severely limited.
Javascript bloat exists because of a social problem: the guy who fixes the corporate webpage's javascripts is called a "webdesigner", and "webdesigners" are the lowest rung on the corporate IT ladder, maybe only a bit above first-tier techsupport.
If you want to make some sort of career you need to upgrade from "webdesigner" to "frontend developer", and that means cryptic, incomprehensible and pointless "frontend frameworks".
It provides to value to business or users, but management puts up with it because it fixes the problem of employee churn. (Frontend positions are a big pain in the ass.)
It would go away in short order if Google rankings severely penalised it.
JS bloat exists because HTML Working Group along with the whole industry believes JS is the solution to everything. They believe everything on the web should be Web Apps, and completely neglect Web Page development. It was only in the recent 2 two years did we start seeing discussions to reverse course.
