It may or may not matter for Ubuntu or Debian or most other distros, but the kind of users/companies/customers that insist on using RHEL very much care about it

It may or may not matter for Ubuntu or Debian or most other distros, but the kind of users/companies/customers that insist on using RHEL very much care about it. The whole point of using RHEL is that it has full support, why pay the premium for it if you then include non supported gears into it anyway.