Preferable in French or Italian, or maybe even German, which I wanted to learn for a long time and this would be a good enough motivation, because, and with all due respect to the Irish, having a continent-wide conversation in a language natively spoken by only ~5 million of its own people is not very conductive to the forming of an European spirit.
Also, please no regarding the language. Coming from a small country, it's great that we have a lingua-franca that we can use to communicate effectively. Doubling-down on going native when it comes to our respective languages won't help the single market, or European integration in general.
EDIT: Won't help our militaries either if and when they'll need to coordinate.
I don't see the value add of an international forum with local languages. There's a great Dutch tech forum already (tweakers.net) visited almost exclusively by Dutch and Flemish people. Great for locals, but entirely impossible to join in on as a foreigner.
Also, you may be confusing Europe with the EU. The UK has almost 70 million people speaking English every day.
Did something happen to the UK?