I was an avid reader of RHEL release notes during 6.x/7.x times and I was surprised to see ksh package not only being shipped but being actively maintained and

I was an avid reader of RHEL release notes during 6.x/7.x times and I was surprised to see ksh package not only being shipped but being actively maintained and getting several bug fixes at every point release. So yes, somebody still must've been using it.