That case the parent linked is about defamation (calling Muhammed a paedophile), not blasphemy (for example saying Muhammed was not a prophet).
EDIT: so I was wrong. See the comments below.
With Ireland's recent repeal, it seems there are now only 17 European countries with blasphemy laws, including Austria, where this case happened:
> Andorra, Austria, Cyprus, Finland, Germany, Greece, Italy, Liechtenstein, Poland, Portugal, the Russian Federation, San Marino, Spain, Switzerland, Turkey, the United Kingdom (Northern Ireland and Scotland) and the Vatican City. This list excluded countries like Belgium and Luxembourg, which provide narrower provisions for insulting the objects of a religion in places of worship or public ceremonies.
https://ipi.media/despite-danish-repeal-blasphemy-laws-still...
I stand corrected. https://en.wikipedia.org/wiki/Blasphemy_law
Specifically, it covers disparagement and mockery of religions and traditions if it is likely to cause justified anger. That leaves a lot open to interpretation (when is anger justified?) but it seems clearly aimed at blasphemy.