I'll continue to speak up when I think that what you're doing is pointless or counterproductive.
But why? What do you imagine you're achieving by telling people that their work is pointless? Why does it aggrieve you to have someone work on something you wouldn't choose to work on? Do you have the mistaken belief that if someone works on project X that it's taking away resources from your pet project Y?
I'm also trying to find the contributions that you're making to Perl, but not finding them. Can you please point me to them? I'm curious what you're adding.