Curious Omission In New-Style Formats

[Lawrence D’Oliveiro]

On Thursday, July 14, 2016 at 12:46:26 PM UTC+12, Ian wrote:
> On Wed, Jul 13, 2016 at 4:24 PM, Lawrence D’Oliveiro wrote:
>> On Wednesday, July 13, 2016 at 6:22:31 PM UTC+12, Ian wrote:
>>
>>> ... don't call it "precision".
>>
>> How about “mantissa length”, then. That sufficiently neutral for you?
> 
> That makes even less sense for integers.

Why?