You’ve never met a lazy person.
You have met plenty of people doing something they’d rather not be doing, that they don’t think is worth doing, and/or that shouldn’t be done, but which they felt forced to do anyway.
Resistance and reticence under such circumstance is psychologically healthy. We don’t want people doing things without understanding why or despite disagreeing with the reasons (assuming they’re old enough or the like to do so). The insistence that people work despite their misgivings has perpetuated many an evil.
When you witness laziness, ask yourself what it would take for you to act the same. Ask yourself if they’ve had the chance to develop the same degree of “grit” you think you possess. Ask yourself what you’re lazy about and whether you should be doing it in the first place.
Tired isn’t lazy. Conflicted isn’t lazy. But labeling people as “lazy” comes close.