> Removing DRM on something you own for personal use is perfectly legal.

Perhaps some places. In the US, it is perfectly legal to "violate" copyright restrictions for purposes like fair use. But if the data is protected by any kind of security, it is a felony to bypass that security (even for fully legal purposes).[1]

[1] https://en.wikipedia.org/wiki/Digital_Millennium_Copyright_A...

What does security mean when there is no ad unless it is shepherded out of the blob? Once it's out of the blob, there is no security to bypass.

You don't own the Google Docs service, nor will you own any webpage you are served.