I would suggest they remove that from the guide. There's no point to turn off UAC, with 1000's of devices over the years we've never had to do that.
https://doc.sophos.com/central/customer/help/en-us/GettingStarted/InstallSoftware/index.html
Kind regars
Wolfgang Ratzka
Hi Wolfgang Ratzka ,
Do you have the link to the document that you are referring to so we can have a look at it? Thank you.