Madam Speaker, it is because the government has an order from the Parliament, passed by a majority of members of the House, not just Conservatives, for the government to produce the papers.
Time and time again, whether it is the Winnipeg lab documents or this case, the government is more interested in covering up secrets than in coming clean with Canadians. The filibuster here is on the government side. Release the papers unredacted as Parliament has demanded you do.