I did read some of the (now offending) posts.

He didn't name anyone, but at the time I thought he provided more than enough information to identify one one of the complainants. Although I'm not au fait with the SNP there were details about situations, people, and roles that seemed more than specific enough for people to work out.

I don't think it was deliberate, and he is probably ignorant about how easy it can be to de-anonymise people. However he should have been more sensitive to these issues.