Yes, exactly. I just turned 66, and have a technical lead role at an autonomous vehicle company. The technologies and languages that I use on a daily basis did not exist when I was an undergrad. Keeping up is essential if you want to remain technical. (I have done 3 or 4 stints as a manager, but always managed to reach escape velocity. The worst day on the bench is better than the best day driving a spreadsheet.) Why am I often the one trying to sell the 20-somethings on trying out the latest language features? Not all luddites are 40+.