IMHO it could make sense to release it in its current state.
This could be useful for "keeping" the users in the community. Some users get tired of waiting for OS4 and switch to Windows/OSX to never go back.
Those users they are losing now probably won't be back. And won't be back for cache less sub Ghz 500Euros motherboards either.
But they may keep using their classics with OS4 and have some fun and maybe their mood will rise enough to make them buy OS4 ofr a more modern machine in the future.
@to the OS4-will-be-pirated crew
Pirates will pirate OS4, honest users will buy it. Just like some people steal things in the supermarket while others pay for it.