Change management on a layered FS, containers everywhere…etc.
Depending on what you’re doing, it can make a big difference. Especially when you’re talking about a 4GB machine with little to no margin of extra working space. Updates will certainly be problematic.
Yes, but as I said, on a 4GB budget, this matters quite a bit. I run thousands of edge devices on a custom distro with similar constraints, and it adds up quickly. It’s not that it’s insurmountable or anything, but I’m answering the question asked and not getting into the particulars. It’s just a known fact.