Please see https://www.reddit.com/r/Eve/comments/hbxkon/project_discovery_lazy_marking_doesnt_actually/
I asked the researcher behind the project (Ryan Brinkman) about this very issue and it seems to not be a problem. This is his reply:
"This was confusing to CCP folks too at the start, and they coded up a gold test gate based on that that doesn’t actually reflect the important information we are trying to capture.
TLDR: Tight bounds don’t matter, only that cells are SEPARATED.
Here is an example I just did just now:
This allows you to speedrun PD while still being helpful to real world science (ie. you don’t have to feel guilty because you’re not actually “cheating”)