You can spin a compelling narrative for any of these but if you want to make a real case then there needs to be a real assessment of the data. Whenever I’ve investigated these types of ideas, I haven’t found them to be very well-supported.
I general I do think the best hypothesis is that people are telling the truth about how they are doing, but the data are somehow missing exactly what is going on. But we need more than speculation to demonstrate exactly what it is.