In my time in academia (~20 years) I have seen the demands and competition increase quite significantly, however talking to older researchers the this really started in the 90s the demands to demonstrate measurable outcomes increased dramatically and funding moved to be primarily through competitive grants (compared to significant base funding for researchers previously). The issue is that while previously it was common for academics to have funding for 1-2 PhD students to look into new research areas, now many researchers are required to bring in competitive grants for even covering part of their salary.

What that means is that researchers become much more risk averse, and and stay in their research area even if they believe it is not the most interesting/imapactfull. You just can't afford to not publish for several years, to e.g. investigate a novel research direction, because without the publications it becomes much much harder to secure funding in the future.

> Has this always been an issue in academia, or is this an increasing or new phenomenon?

The introduction of this article [1] gives an insight on the metric used in the Middle Ages. Essentially, to keep his position in a university, a researcher could win public debates by solving problems nobody else could solve. This led researchers to keep their work secret. Some researchers even got angry about having their work published, even with proper credit.

[1]: https://www.jstor.org/stable/27956338

The issue in all fields became significantly worse as developing countries decided their universities needed to become world class and demanded more international publications for promotion. Look at the universities in the table in the paper and you can see which countries are clearly gaming the system. If your local bureaucrats can’t tell which journals are good and which are fake, the fake journals become the most efficient strategy. Even worse, publishers figured out that if you can attract a few high-citation papers, your impact factor will go way up (it’s an arithmetic mean) and your fake journal becomes “high quality” according to the published citation metrics!

Math is particularly susceptible to this because there are few legitimate publications and citation counts are low. If you are a medical researcher you can publish fake medical papers but more easily become “high impact” on leaderboards (scaled by subject) by adding math topics to your subjects/keywords.

Abuse of power is definitely not new. Professors have historically overworked their grad students and withheld support for their progress towards a PhD or a paper unless they get something out of it. For women it’s extra bad because they can use their power in other ways.

I've seen similar stuff in a couple of other places, including IT back in the 1990s (back when it wasn't nearly as glamorous as it is today).

I think some of this has to do with... resentment? You're this incredibly smart person, you worked really hard, and no one values you. No one wants to pay you big bucks, no one outside a tiny group knows your name even if you make important contributions to the field. Meanwhile, all the dumb people are getting ahead. It's easy to get depressed, and equally easy to decide that if life is unfair, it's OK to cheat to win.

Add to this the academic culture where, frankly, there are fewer incentives to address misbehavior and where many jobs are for life... and the nature of the field, which makes cheating is easy (as outlined in the article)... and you have an explosive mix.