It's true that hire and tenure decisions are under the institution's control. But a lot of funding comes from external sources, and most public funding uses some sort of publication-based metric. There are exceptions, but that's the game. The CV of your PhD's is often judged by the publication list and the corresponding citations. That's research institutes where they might go, other universities, large companies etc. will look at this. It's difficult to change this system as isolated player, and coordinates efforts so far failed on the "what else" question.

To dig even deeper into the problem: you have to get a large number of institutions to agree to stop this at once, none will voluntarily risk their (generally) working pipeline and system first. It disrupts a lot of different things and takes them out of the currently established model that everyone still uses to measure success. It reminds me of how most people who say “well not everyone should go to college!” Are obviously omitting “…except for my kids of course.” It borders on an expressive response, it’s not something anyone wants to actually take action on.

There’s not a whole lot to gain for the individual or even the institution unless they hit an absolute home run on the first try that also shows positive results very quickly. More than likely the decision will be questioned at every turn