No problem with labeling oneself, the problem is with definitions. Words convey ideas and therefore make communication possible. Words, to be functionally meaningful have to have a common definition. When definitions are arbitrary it causes confusion. When the change is subtle, gradual or unnoticed it changes people's understand and that effects ideology and politics. The argument over what is a conservative is very important no matter who brings it up.
Not true. It's very important if a LewRockwellite brings it up, because the sole purpose of the bringing is to declare the non-LewRockwellite "not conservative enough", thus trumping all, and allowing the LewRockwellite the smug self-satisfaction one gets from bullying one's opposition into giving up the argument. You advance nothing, not even one convert to your cause, but it feels swell.
So, most of your premises are suspect. You've devolved into griping about semantics. Don't blame yourself: It's impossible to discuss LewRockwell stuff without someone getting that way, sooner or later.