OOXML is Microsoft’s spec. It was not developed out of the goodness of MS; it was done only because they thought they would lose market share. It is riddled with so many errors that they have had to stack with their own lackeys the various committees that must vote on whether it will become an international standard. This move follows threats of lawsuits, and as a result these committees have become very quiet.
Why should you care? The Massachusetts movement towards open standards was supposed to help Massachusetts, not Microsoft. It was supposed to ensure that our documents were accessible to all, accessible regardless of upgraded versions of software and OS, and free us (both the government who generates these documents and the public who wants to view them) from dependency upon one vendor.
If OOXML were a good standard, then by all means it should be included. But it isn’t. I wouldn’t want Bechtel included on a list of approved state contractors and I don’t want a junk standard included in an initiative which is supposed to benefit and protect the people of Massachusetts.