It was sarcasm.
How about the fact that it was based on a plan from the Heritage Foundation.
How about the fact that this is an absurdly reductive statement?
The Heritage Foundation
has published articles on the legalization of marijuana. Does that magically make legalization, suddenly, a right-of-center idea...? Sure, you could make a libertarian case for that, but largely, no, the contemporary American right does not vociferously endorse marijuana legalization. John McCain cosponsored the McCain-Feingold Campaign Finance Reform bill, McCain is a right-of-center conservative. Does that make campaign finance reform and opposition to the People's United ruling that overturned McCain-Feingold as ...
conservative, right of center policy? No. And of course, obviously,
the Heritage Foundation railed against Obamacare in 2010, 2011, and 2012.
The history of single payer health care reform as a major issue in American government predates the Heritage Foundation by some 30+ years. It predates what you're referring to, the ~1990s Republican Health Care reform platform which the Heritage Foundation would have contributed to, but some 60+ years. That Obamacare/ACA ended up becoming a more centrist policy
to get through a Senate that was nearly split 50/50 at the time doesn't make it "right of center idea," it's relationship to "Romneycare," a bill written by the liberal Democratic Massachusetts legislature and signed by moderate-right Mitt Romney, doesn't make it a center-right bill. Further (and more relevant to the discussion at hand), It also doesn't make it's sponsors and advocates -- people who fought for far more progressive health care reform like Ted Kennedy and Nancy Pelosi --
right of center conservatives.