Good to know where my country imported this custom from...
I think it started back in the 90's when the business in the UK was starting to become more organized and corporate, after the days of bedroom coding and/or tiny self-run startups faded away due to needing access to proprietary tools and/or expensive hardware.
Basically people got into production roles with zero experience or creative instinct. For instance I remember being introduced to a guy who'd come in directly from being a local radio producer! Unsurprisingly he was totally clueless, but afaik he stuck around for years.
They survive because initially they do nothing, or usually nothing too damaging and so the project gets out the door based solely on what the line is capable of. This gets them more standing (basically the credit) and so they given "project ownership" of the next thing. At which point they usually start interjecting their own fuck-witted ideas which the team needs to work around. Survive that -by luck or by crook- and they continue to ascend the corporate ladder.
Bigger teams, bigger budgets, and they start playing the game of networking, people-pleasing their superiors, shifting blame onto underlings for the problems their lazyness/cluelessness/arrogance creates... Anyone who's worked in the biz for anytime knows the drill.
I'm not saying that all producers are this bad, but in my experience there always seemed to be an overwhelming majority who are, especially in the bigger organizations. I think this is down to them being enabled by unearned power and influence gotten from association with global brands, allowing them to dictate to contracting devs/studios without fear of push-back or censure.
Its probably why Sony UK's always been particularly bad. Back in the day their success was largely built on the contributions of external teams, with the in-house stuff being mostly shit that coasted by on the strength of the (bought) IP or marketing budget.