I am in my mid 30s and when I graduated from University, I worked 3 years on mainframes before joining systems group and eventually cloud team and then now Data

I am in my mid 30s and when I graduated from University, I worked 3 years on mainframes before joining systems group and eventually cloud team and then now Data Engineering. I have had experience on mainframes, AIX platform, AS400, windows, linux, AWS, VSphere, docker, IBM cloud, etc. Heck I have even worked with punch cards! I have programmed in environment specific tech stacks as well (JCL, REXX, Info Management on z/OS vs Python, JS, Kotlin on linux, etc). I would have completely agreed with the author in 2015 because this article is from 2015 -- in 2015, Cloud adoption in corporate America/Canada was minuscule and general cloud experience was missing in the IT industry. But now, in 2019, cloud is the new mainframe and the reliability gigantic cloud providers such as AWS easily rivals (may even exceed) the reliability of a on-prem mainframe setup. And to top it off, majority of mainframe staff and managers are really not that sharp or tech savvy -- you will have a handful of crazy good developers and tech leads while the rest are still doing level of programming they learn in their college days...back in 1970s/1980s.