Then why is the problem worst among Boomers [1]?

Alternate Theory:

This is purely the result of "too much news". Breathless coverage of every little detail means every little mis-step blows up to infinity, quickly eroding trust.

The 24hr + internet news cycle is basically a reaction maximization optimization machine with a dt ~ 0. Fox News walked so Facebook could run and now Twitter is sprinting. Insert long form podcasts in the mix for a constant hum of algorithmic misinformation and this result is inevitable.

tl;dr: more people need to go out and touch some grass.

[1]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7505057/#:~:tex....