"You're left inventing workarounds such as your own namespace for loopbacks, or changing the service to also bind to, say, 127.1.1.1." I don't understand this

"You're left inventing workarounds such as your own namespace for loopbacks, or changing the service to also bind to, say, 127.1.1.1." I don't understand this - you say you are "left with" an entire /8 that is universally recognized as the loopback ... what more could you want ? I am genuinely curious - what is the utility of having lots of different network address ranges to define as the loopback ?