It isn't about seeing wildlife, it's about the impact on wildlife. It is the kind of report that will used as evidence to curtail events such as fell running in the future.
Read carefully "These findings suggest that land managers should not only regulate the type of stimulus that may disturbed wildlife, but also etc."
Notwithstanding the fact that the biggest living impact on other wildlife is the sheep which have been used to systematically degrade upland deciduous woods leading to mass loss of habitat over many centuries.
Simon Blease
Monmouth