You can define "strong" any way you like. But for me a "strong lineage" would be authentic, verifiable, and credible. If it's not fit for public discussion then it is what it is, but it's not strong.
I happen to know (as Howard mentioned) that it is indeed authentic, verifiable, and credible. It's also private - although Dan was never hesitant to discuss it in my hearing.
Notice that nobody's asked for verification of your lineage as qualification to put out your ideas.
Anyway, Dan mentioned that it doesn't matter, and he's absolutely right.