2) I meant it as the royal you, as there really is not a problem with having any given number of non-zero digits in the income band boundaries (they likely are avoiding round-offs having 0 zeros, though). I apologize for not being clear about that and for the implied slight.
3) I got the point and found it entirely lacking. How often do you actually need to know the income bands to that precision? I would guess no other time than you happened to be set down and doing the calculation of the tax owed, and I submit that the number of times is ZERO for people that use any one of the number of cheap/free software tools or just send it off to an accountant (who most certainly will not be hand calculating it) because it is a bit more complicated due to rules that have absolutely nothing to do with that chart.