Good thing Ryan knew his audience: great UX is something I really care about. So I gave it a try and he wasn't exaggerating. The UX really is that much better than any other platform I had tried.
And someone who says "Exponentially better" rather than "much better" is the kind of person who might have a button marked "proactively validate" rather than "confirm".
At the same time, it's hard to get enthusiasm across in emails. I'm no poet. I just get put off when I'm reading a pitch and mentally trip on some out of place phrase.
Don't let me grinch your day.
And if grinch is actually a poorly defined term that's slipped into common usage and I'm applying here incorrectly... irony.
It doesn't detract from the product I'm sure. But he could just as easily have said 'vastly superior', and so doing not made me go 'Danger, danger, casual disregard for meaning ahead'. Especially since disregard for meaning is a bad thing in UI design.