The lack of deduplication, or more like avoiding duplication, of what are basically files in some of these implementations is a problem.

But it's not a problem for me. It's also not a problem for most people. And it's not at all a problem next to the dumpster fire of closed source OS ; so ultimately there is no real problem.

Yet, all of that is moot, because someone already solved the problem. But I'll wait until they publish their work to talk about it.