It certainly has an interesting level of detail on its subject:
His free time is devoted largely to his family, which includes three cats, one of whom not long ago replicated the most infamous allegation in the Steele dossier by peeing on a family member’s bed.
This looks quite interesting (having skimmed it quickly - and it is long)
https://www.newyorker.com/magazine/2018/03/12/christopher-steele-the-man-behind-the-trump-dossier