[chlorion]

I'm not sure that I understand this.

The openssh developers supporting outdated systems and software forever also isn't a long term solution. Why should they pay this cost, but not you (or your company)?

If you can keep unsupported hardware in operation, why can't you keep a containerized openssh image around, or maybe a VM image, or ideally a statically linked executable?

Maybe your company can hire an expert in software archival to set this up and maintain it if needed, or an extra developer to maintain an openssh fork that supports your environment.

Expecting other people (who you don't even pay) to support your outdated systems doesn't really make sense.