I now have a name for what I have been worried about!

"Epistemic trespassing" (not epidemic!)

When commentators holding real expertise in one field intrude into another, passing judgment where they lack crucial competence. https://blogs.scientificamerican.com/observations/which-experts-should-you-listen-to-during-the-pandemic/

This is what is happening when folks with expertise in high-energy physics, hedge-fund management, computer science, chemistry or cardiothoracic surgery are publishing on #COVID19!

"Why do people trespass, despite the risks to others and to their own reputations? We presume that most have honorable motives. But good judgment requires more than just good intentions."

"Trespassers lack well-tailored expertise. Genuine experts have capacities precisely tailored to the problems they tackle, allowing them to reach sound conclusions or at least reduce mistakes. They bring years of relevant training and an appreciation of their limits."

"Trespassers believe instead that their admittedly valuable “home field” skills carry over to other fields. Knowing only those skills, they believe they need nothing more to step outside their true circle of competence."

"Coronavirus trespassers strike out alone on social media and in op-ed articles. They may crowd out real experts and science communicators trying to mitigate misinformation."