Maybe only tangentially related, but I can share some of my personal experiences with hires at my current job. I work for a mid-size IT consultancy agency in the Netherlands which prides itself on almost exclusively hiring people with a masters in comp sci, or occasionally some other STEM field.
I'd say that 90% of the new graduates we hire straight up cannot program beyond what you'd need for your typical uni assignment (a few months ago one asked me what 'git' was). If they're motivated and eager to learn, I can usually get them to productivity in a month or two. The ones who are not take months to get up to speed and become a real drain on the team's productivity.
The more senior colleagues I interact with are kind of a mixed bag, some are really good and a pleasure to work with others have learned just enough to get by in their current role and become useless as soon as they have to do something slightly different.
That being said I do think that the level at my company is above average in relation to "the industry". If you want to see truly large amounts of non-contributing employees, have a look the IT-department of a large bank, pension fund, government agency or some other technology adjacent big organization. They can't hire the most talented engineers to start with and then most of them are actively kept from doing productive work by layers of middle-managers and bureaucratic procedures.
On my last team, I had an incompetent junior engineer. It was a time suck to do hold countless pairing sessions with them, answering the same questions again and again without having them learn anything.
On my new team, there is an incompetent senior engineer. Damn... how I miss my incompetent junior, who aside from wasting some time, never really affected the team. The incompetent senior produces impressive amounts of badly architected, untested code which breaks subtly and is impossible to maintain. They are also totally unreceptive to mentorship because they are so senior and know everything.
I'd say that 90% of the new graduates we hire straight up cannot program beyond what you'd need for your typical uni assignment (a few months ago one asked me what 'git' was). If they're motivated and eager to learn, I can usually get them to productivity in a month or two. The ones who are not take months to get up to speed and become a real drain on the team's productivity.
The more senior colleagues I interact with are kind of a mixed bag, some are really good and a pleasure to work with others have learned just enough to get by in their current role and become useless as soon as they have to do something slightly different.
That being said I do think that the level at my company is above average in relation to "the industry". If you want to see truly large amounts of non-contributing employees, have a look the IT-department of a large bank, pension fund, government agency or some other technology adjacent big organization. They can't hire the most talented engineers to start with and then most of them are actively kept from doing productive work by layers of middle-managers and bureaucratic procedures.