"Beef is not vegan, and all vegans realize this."

"Many vegans think it is vegan."

"No true vegan would think that, therefore, they aren't vegans."

No True Scotsman is about a particular form of reasoning, not any sentence that includes the word "true". It's a form of ad-hoc rationalization where someone rejects counterexamples out of hand. ramraj07 wasn't really making a generalization, and the rejection of the "counterexample" was neither ad-hoc nor unjustified. Many people outside the U.S. have always viewed American liberals as right-wing, and this is justified because American politics actually are right-wing compared to much of the world.

It’s not exactly rocket science to substantiate my position. Nyt regularly publishes opinion pieces from quite right wing people. Their editorial stance also often call out clearly problematic extreme left views (like Lea Thomas controversy).