It's not very scientific due to the small sample size (and potential flucation in users of the site) but if we are using that page as a guide, when you consider the 1.6TDI fix only became available this year, the rate of failure on that engine is arguably higher following the fix than it was before (multiple reported vehicles in under a month, compared to a vehicle every couple of months on average). There's also examples like EGR valve replaced in November after 59k miles, NOx fix on 1st Feb, and a couple of weeks later EGR having problems again.
EGR may be a frequent fault but that doesn't rule out the possibility it could be even more frequent following the fix. It is speculation but the speculation is enough to put me off.