It’s the German parliament, not government (although I guess there are definitions that include all three branches, the latter seems to be used synonymously with ‘administration’ here).

The committee chair in question is from the liberal (as in libertarian, for Americans) party, which isn’t part of the governing coalition.

That being said, the criticism isn’t necessarily outside the mainstream, and both his Free Democrats and, even more so, the Green Party that would likely agree could well be part of the next government six weeks from now.