I would agree with this IF I also had problems with other tap-time devices. I don't. All three of the other delays I have work about as perfectly as I could expect...to the point that I've never even noticed them ever having an issue with "locking in" to the correct tempo. That's about the best compliment I can give them, because I SHOULDN'T notice them. They should just work; and they do. With the Axe, I have to re-tap several times a song, not because our (band's) tempo is changing but because it just doesn't lock in accurately very easily.
I don't care about the LEDs or really notice them much but best case scenario would be to give users a choice of "average" or "last two", and have LEDs sync perfectly with the actual taps rather than just the bpm in a general sense. LEDs might already sync accurately to taps, but as the taps themselves aren't accurate to the song's tempo, the LEDs aren't either. I don't know. For me it just boils down to this: three other tap-devices I have work perfectly. Axe's tap function is very difficult to get time-based effects in sync with the song.