You are confusing the issue by equating tiny concrete issues with broad issues of principle. For instance, I don’t associate with *anyone* who steals music, movies, or video games online because they are violating a fundamental moral principle: the idea of property rights. Show me the moral principle that would universally condemn smoking or being overweight. Those issues are a trade-off between, say, your personal enjoyment or *potentially* increased risk of a heart attack twenty years down the road.
Advocating evil and advocating lifestyle choices that you personally don’t like are COMPLETELY different things. Tolerance of the latter can be beneficial to you because you can enjoy, say, an overweight person’s company without obsessing over their health or visit your friend in their cluttered house without going insane and attacking the drapes with a flamethrower. Tolerance of the *former* is a DISASTER.
Actually, you probably associate with and trade with people who believe in the concept of legalized theft. This is what I would consider a huge crumb of irrationality. How do you deal with such people? Is it moral tolerance to choose to deal with such people? I think that the rational is the moral. Lifestyle choices are not exempt from epistemological significance nor moral significance. The purpose of morality is to know how to act, and how to live. A person who degrades his self worth by not respecting his body is acting toward his own self destruction. This includes choosing to allow oneself to be obese. Damage is damage. Smoking is very damaging, and I think any objective pleasure that it offers does not objectively outweigh the hazards it can pose to your health. Now there is a spectrum here, smoking is not as bad as using heroin, and being 5 lb. overweight is not as bad as being 100 lb. overweight. When it comes to toleration, it is not moral to sanction ideas or actions which will in fact lead to your self destruction. But not all false ideas do in fact lead to total destruction. If that was the case than no person would be alive today. Some false ideas have a disastrous effect, some do not.
In regards to principles:
“A principle is “a fundamental, primary, or general truth, on which other truths depend.” Thus a principle is an abstraction which subsumes a great number of concretes. It is only by means of principles that one can set one’s long-range goals and evaluate the concrete alternatives of any given moment. It is only principles that enable a man to plan his future and to achieve it.” - Ayn Rand Lexicon
http://www.aynrandlexicon.com/lexicon/principles.html
Principles do not universally condemn actions because principles are general truths, this means they are contextual. A principle applied regardless of context is rationalism. Every abstraction regardless of how abstract, can and must be tied to reality. That being said, there would be no difference between someone who steals a CD valued at $9.99 vs. any other CD valued at $9.99 from a store. These 2 actions are equivalent. Meaning you do not condemn someone to death for stealing a Beetles CD and just fine someone else who steals a B-52’s CD. Now compare the moral crime of stealing a B-52’s CD to someone that believes that universal healthcare is good, and moral. Which is worse? Note that in the United States there is no jail time for holding the belief that universal healthcare is good, even though it requires more theft than what we have now. We should also consider that if and when universal healthcare is implemented it would certainly be far more damaging than having a B-52’s CD stolen from my or your house. Actions are far more significant than words. This is mostly because people do not know what they really think. They are often sloppy in their thinking, and in their conversations.