It is an interesting reading - it gives a very different impression than the article.

According to the document, she claimed Muhammad was a pedophile in a series of seminars "Basics of Islam" that pretended to be objective courses but were organised by a far-right political party.

The judgement also mentions that saying something offensive or untrue on purpose and then claiming "it was just my opinion" doesn't protect you from repercussions, that you are allowed to criticise current practices of religion but not on bases of what someone allegedly done hundreds of years ago when societal standards were different, and that fine 480 Euro is on the low end of a range and not disproportionate.

So as I understand it, a far right person was deliberately shit-stirring in a propaganda seminar and got slap on the wrist (fine of ~ 15 % median wage) to be more careful next time.

[1]: https://hudoc.echr.coe.int/eng#{"itemid":["002-12171"]}

EDIT: the link doesn't seem to work properly, you'll have to copy-paste it.