I concur. I think there's a double standard here, at two levels.
First, you're right that if you want to pass something that might be unconstitutional, it's best to start it as a private member's bill in the Senate rather than in the House of Commons.
Second, this was something that bothered me in the last Parliament, because it's a long-standing problem. It would be nice if the Senate accorded us the same treatment we accord them. It's been a bit of a one-way street, and it is a bit frustrating.