Job hoping was never supposed to be allowed to begin with for H-1Bs. In fact, under H-1B law, when a guest worker’s job ends, they have to return to their home country and reapply from there.
https://www.timesnownews.com/business-economy/world-news/article/job-change-in-us-becomes-tougher-for-h-1b-visa-holders/408807