What is important is that a genuine effort is put forth to see why virtue is crucial, and to truly understand firsthand what wisdom the Buddha was trying to transmit. Overcoming dukkha and understanding the true nature of reality, the reason for this ancient tradition, many times goes forgotten in pursuit of other individual desires in the name of being a Buddhist, including judging and labeling others.
I think that in usages like the above, "sincere" and "genuine" efforts are not something one should question very much. I can only try to be mindful of what I'm doing, and to put in an effort at doing it.
It is a "challenge that is hopelessly hard," to put forth the practice, but frankly, I don't see any alternative.
How is "genuine" practice related to travel practice? Travel, especially as folks like me do nowadays, is rather difficult. It's important to continue to practice amidst this difficulty.