He also signed Obamacare, a bill written by Republicans, approved by Democrats and then watered down by Republicans who held a majority. All Obama did was sign it as he was legally required to.
That's the prime example of why casting Obama as a radical is ridiculous.
Having the power to ram something more partisan-palatable through and choosing to negotiate with the opposition to find a more mutually-tolerable consensus is the antithesis of radicalism.