Bullshit. This kind of passive-ad-hominem is worse than worthless. If you disregard criticism of actions by people who aren't taking those actions, you're left listening only to people who are actually doing those things... and guess what? They're probably not exactly railing against their own paradigms.

Talk is only cheap if you're lapping it up in bulk from poor sources. If talk were always cheap, advisory boards and mentors would never, ever provide any value. So by all means, throw it away; disregard people based on who they are and not what they say. It's your own loss.

Just have the decency not to mislead people who are looking for guidance with your own cheap talk.