I think the reason for tech ageism is simple: generational conflict peppered with historical perceiving of how old tech folks work (being stubborn, "slow" to ad

I think the reason for tech ageism is simple: generational conflict peppered with historical perceiving of how old tech folks work (being stubborn, "slow" to adapt, too hierarchical and other common views, as all the old folks were baby boomers or something trying to step in tech for the first time, just today). It takes time for this prejudice to fully spread in waves over the years so only recently this ageist view became critical in tech, I guess. It will also take some time for some of the affected old folks and the young ones to realize the current "old" people were actually young enough around the 90s so ageism will slowly stop being a problem in, say, 10 years from now (I believe peek ageism is past us). But perhaps I'm being naive and for lots of 20-somethings out there being over 40 in tech is a career death sentence indeed.