Sorry, wrong ref to the CW Urology update
Effectively the low pain numbers from this have got everywhere, because it's a core primary urology reference text, and loads of people will quote the problematic numbers in good faith as it's seen as authoritive.
In turn a lot more men are being left in significant levels of genital pain by vasectomy than previously acknowledged.
There are also a lot of people who have built whole careers on providing vasectomy who will really not want to hear that there is a much higher rate of complications than previously thought.
Up to 1 in 50 odds, vs. 1 in 1000 previously, for a contraceptive method , which already requires a genital surgery to use, leaving you in life impacting and possibly uncorrectable pain is a pretty major un-sell after all