If you read the “Inquiry of Ugra”, you’ll see that the ideal layperson is nothing like the average American Buddhist. The layperson is supposed to live like a monk and hope to be reborn as a proper monastic.
I think it's folly to try to essentialize "the Buddha", when it's likely that Siddhartha Gautama never even existed.
My point in bringing up Ugra was to show that many/most sects of Buddhism have been predominantly focused on monasticism. In the sutras, advanced lay people are the exception, not the rule. And the surrounding societies understand that there's a difference. But in the west, lay people have higher expectations for spiritual attainment...
https://en.wikipedia.org/wiki/Ugraparipṛcchā_Sūtra