Don't worry. I'm European and I am certain beyond the shadow of a doubt that this won't get me anywhere near trouble under European libel laws. (Apart from the fact that there is no such thing as a 'European law')
First of all, European libel law requires a demonstrably false statement which 'seems to' by definition isn't.
Secondly, libel would be a civil offense so even if I were to be charged it would be the damage I caused to Opera at minimum (lowest value the judge deems to certain to have occurred.)
So basically only if I made a categorically false claim and it caused a demonstrable amount of loss (e.g. a contract with defined monetary value falling apart) would I be seriously affected by European libel law.