I'm not disputing the fact that there is ageism, as I'm sure there are thousands of examples of it, but there's so much demand and so many different companies. I've worked with plenty of over-50's. Maybe there's a sweet spot for growing companies where you need the experience, which has been where I've worked. Small companies don't need structure, and maybe want cheap employees. Large companies put all that structure in management and a few super senior folks. (though I saw plenty of over 50s in my large company experiences) Medium growing companies need experience. I dunno, just guessing since certain companies I've worked for seem to have a higher concentration of older folks.

Here, this rando website says that 46% of software engineers are 40+

https://www.zippia.com/software-engineer-jobs/demographics/

Now I'm curious, this stack overflow survey paints a grimmer picture:

https://insights.stackoverflow.com/survey/2018

That's a survey though, I'm curious what biases are going to exist in the data. We might assume that older software developers move around less? May be less likely to respond to surveys? May be less likely to visit stack overflow, especially if they do less hands on coding?