Some articles of this site could be missing big chunks of content - this is because the article's body has an inline advert script, which is cropped from $body with all following elements by post-template default rules

It's possible to detect it and mark @unsupported only for regular news, articles etc. (sample issue: https://instantview.telegram.org/contest/ua-football.com/template1/issue1/ - was chunked in old template, marked @unsupported in new)

But not for the userblogs - for most of them a huge chunk of content will be missed,
Removing this scripts makes no effect

Another example for this template: http://bit.ly/2sBwVRo (last paragraph is missing)

So there's no point to generate an IV for userblogs as some of them would be missing content and there's no way of predicting it