At a talk presenting a personal project? Do you also feel it's OK to go to talks on Java projects to make statements like "Well, why didn't you write this in G

At a talk presenting a personal project? Do you also feel it's OK to go to talks on Java projects to make statements like "Well, why didn't you write this in Go? It's a better language that serious developers are using and nobody will want to contribute to your dumb project using java"