Isn’t this exactly the argument for preparing a plan B? If employers believe they can get the same value add for devs in their 20s at a fraction of the cost the

Isn’t this exactly the argument for preparing a plan B? If employers believe they can get the same value add for devs in their 20s at a fraction of the cost then why hire the 40-somethings? My personal feeling is that ageism in software development shouldn’t be a thing, but it’s a reality I’ve witnessed myself, so I can’t ignore it.