I don't think so. Sure they'll be down a couple of weeks but most likely back up soon if I were betting money. It shows that "if you build your site to a specific platform" that you might be fucking yourself over. However if you stick to OSS core software you'll be okay. Yeah yeah I know some sites can't afford to be down for a couple weeks but I'm willing to bet vast majority of businesses would be ok. I'm sure parler will be back soon with all the hate and putridness that it always had.