This is not a matter of personal perspective, it is a matter of practical computer reality.
Openstreetmap is a map for electronic devices (mainly) and not for printing purposes. Any information in IT systems is valuable but comes with a price. It consumes computing power and memory resources.
If that information is worth it (aka: useful) we accept the above price. Otherwise we reject that information.
Also remember nature’s law: “keep it simple !”.
Names prefix “Οδός” and “Λεωφόρος” are uselss in all terms. When we tag a way as highway=* we mean street (Οδός), and when we tag a way as highway=motorway/primary/secondaty implies an avenue (Λεωφόρος).
So the information is already there, therefor we MUST NOT re-register it again within the name tag.