I just looked it up. A dryer can get up to 190*.
If we only need 104* to kill the bugs (BS! That’s not ‘hot’. That is warm! If 104* is hot enough to kill bugs, then I’m perfectly sterilized every time I take a shower.) then 190* will finish off anything the washer doesn’t catch.
These are people looking for a problem that doesn’t exist.
Unless you line-dry. Then I could see germs getting pushed around and the clothes not being really ‘clean’.