What the fuck? If you measure something you do not like, the immediate response should not be to grab a hammer and try to kill it. It probably exists for a reason. Understand the reason. Then take action. It may be that there is nothing you can do -- directly. Only a small few percentage points of the problems in the world go away through direct action.
Prima facie, this argument seems to be that if employers don't like an attribute in a job applicant's resume, we should either make it illegal for them to discriminate based on that attribute or "fake out" that attribute in some other way.
It seems like anything I'm going to say is blindingly obvious, but I'l say it anyway: we cannot provide "recent experience" in X simply by hiring somebody and giving them a nametag that says "I do X!". It doesn't work that way. Employers want experience, not simply words on a resume. You can't create lots of experience for a job position in a market that simply might not have that many job positions of that type available. In addition, sometimes (not always by any means) companies let go the people who are deadweight first.
I could go on. There's a plethora of various speculations I can make about why this measured observation is true. More research, most likely by job seekers themselves, is required to fix this. Politics by correlation, just like management by correlation, is a terrible way of running a ship.