Slowing is a concrete and clear term and so they would be called out as liars immediately, it's also embarrassing for a business. Pace(ing) is vague and unclear non-word, so they can't be called out on something which can't be defined and also, because it is primarily only used by runners, cyclists or other competitive sports, they are kind of signalling to the VCs that they don't actually slowing, they are in a competitive race instead (wink, wink).