I understand your concern but,
Over 40s are not the problem. The wrong people in the wrong jobs is the problem.
If you are over 40, you may remember when running a new piece of software or playing a game, involved typing it out first.
I started programming in 1984, but drifted into DOS scripting due to the quick satisfaction.
I am 47, and generated my first PGP key in 1999 on my Amiga PC. I use certificates to sign and add OS standard validation and encryption to all my email.
I went from electrical engineering into IT in 1995, and became a IT Director of an IT company in 1998.
I favour free Opensource software, and have contributed to the development of many tools including Avira antivirus and Vivaldi browser
Now I am an independent IT consultant and tech radio show host.
Currently I am an admin at several gaming forums and am a member of the Chaotic Dreams dev team, currently building a new Chaos for Unreal Tournament. The head of the project is older than me. I am also a member of the group that created the GameSpy replacement, so am responsible for keeping 1000s of gamers connected.
There are even tech savvy gamers that are over 60, and have been hosting severs since 1999.
Older People Use More Complex Passwords than Tech-Savvy Millennials
A Look Into Online Security Through the Ages
Less Than One-Third of People Use Two-Factor Authentication
Report: 40% of IT security leaders don't change default admin passwords