I agree - @3nrl+15P1LmQR very well said.
i was a main framer for my whole career at IBM. Over the last 10-15 years I watched as new hires came in, got the ear of a 2nd or 3rd line mgr (who wanted to become a director or vp) and sold them on the latest thing the college kids were using. Then came the mandate to move all documentation or what ever to this new platform. No tools to do it, just cut and paste and you could not even past pics or other diagrams. But we had to do it, then years later said mgrs moved on, said college kids moved on (they became a star in those mgrs eyes) and we were left with their mess. Then something else came down the pike and we had to now change again because they were going to sunset what we went to years earlier. (and again no tools to do the job)
What mgrs do not consider is the time wasted by the developers doing all this extra work instead of doing the real work of supporting and developing the products. Now I am not saying that change is not needed, but it has to be managed way better and a bit of foresight would help. As I seen written here before, IBM needs leadership and IBM has to let the true leaders they have lead and not allow the paper pushing leaders and their cronies to continually push the true leaders to the side lines.
As for a mass exit, I think you will see more "older" main framers begin to retire (if they are able). covid 19 has open the eyes of a lot of people that you only live once and you don't need the stress of always looking over your shoulder for the next RA. If I was still working there I would be looking to retire.