How was I "not quite true"? Because I didn't bother to specify details? Was I wrong about the reasons for the change? The comment wasn't deliberately misleading, either. There was a change to prevent direct to IP connections, as that had become viewed as a potential security risk. If the comment was wrong, that was likely accidental.
It's not quite true because you're implying there wasn't a limit. There was a blocksize limit all along, it's just that Satoshi decided it should be reduced from 32MiB to 1MB.
Look at the early commit history of Bitcoin sometime; Satoshi made really misleading comments all the time hiding major changes.
Maybe because he usually made several changes at each commit, or he just want to avoid confusing and panic at early stage of the development