the world is flat

That's another topic, although people have become skeptical about the shape of the earth after realizing certain photos of the earth were "composites" rather than actual pictures:

https://qz.com/192700/the-guy-who-created-iphones-earth-image-explains-why-he-needed-to-fake-it

These people put their health at risk by doing so

That is what is being argued by the OP article, that people in contrast put their health at risk by using microwaves

It is a risk to one’s health to eat raw meat

They're saying it is a risk to one's health to use a microwave to heat food, in contrast

Not all view points merit deep discussion

True, although it is unfortunate that some subjects which probably should have deeper discussion, don't get the discussion needed

Are you anti-vax too

Vaccines have many problems; I'm open to vaccines possibly working, but sanitation may be more important (like quarantining and social distancing were used during lockdowns), they may be contaminated with toxic additives, they may be ineffective as recent flu vaccines have been, there are "free" alternatives that people might do like get Vitamin D by getting some sunshine that help prevent disease, there are financial incentives that may get in the way of recommending free alternative remedies, there is the placebo effect which may explain the "effectiveness" of some vaccines, and so on (to name some issues).