[materialpoint]

Who's gonna tell the author that Git doesn't do diffs, but snapshots?

Deltas are just an implementation detail, and thinking of Git as diffing is specifically shunned in introductions to Git versioning.

[IanCal]

That doesn’t matter to the point, which is stored history misses the way in which things moved from state A to state B.

[materialpoint]

So you missed the point too. The post depends on versioning being diffs only.