Correct, most sys-admins use binary packages. However if a sys-admin finds maintaining packages for other CPU architectures difficult, like they can't handle so

Correct, most sys-admins use binary packages. However if a sys-admin finds maintaining packages for other CPU architectures difficult, like they can't handle something very basic like "uname -m", they aren't qualified for the role. Whether this is "harsh" or not doesn't change that it is true.