Sounds like they don't want to bother modifying the diners for Sleeper Lounge purposes, especially since doing so would mean that they'd have to keep the LSL ViewDiners in a separate pool from the Crescent/Meteor ViewDiners. I really don't see why any modifications would need to be made to the diners for use as a Sleeper Lounge anyway. From an equipment standpoint, the job is pretty much the same.
Wouldn't be a "lounge" in my mind then. I envision a lounge as having nice comfortable seats facing the windows or angled to them with more of an atmosphere of a place to sit, relax and have a drink or light meal. Instead, if not modified, it looks more like a cafe that's out of business.
Then, again, if the "plan" fails, restoring them to diners wouldn't take a lot of effort except to clean out the cobwebs and stored items in the cookers.
They call it a Sleeper Lounge, but it's not supposed to be a conventional lounge. It's really primarily a place for people to sit down and eat, but since it's exclusive to sleeper pax, they call it a lounge. It's not like an SSL, which is primarily to have a space to relax in your spare time.