I think RealBand still has a place in my heart, I think Jeff may be a bit worn out from it and not young and enthusiastic anymore like I got from it frown
Yes you are right there about the backups that would be it.
That's the thing as it's using destructive editing it needs to make hard copies that can build up to a huge amount of hard drive space.
Where as non destructive editing uses and keeps the original files intact.
This is Reaper's file size as it's all reference data:

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