I don't think Yuzu advocates are actually advocating piracy.
I think they think an illegal use of a tool should not mean the tool is banned.
"Emulators don't pirate games, pirates do."
I think our echo chamber will surface views amenable to this viewpoint. Emulation news is quite literally hacker news.
But we deceive ourselves with such a bubble, when the outside world doesn't lean our way. Downplaying piracy usage doesn't do us any favours when trying to build an accurate model.