That is another factor, but not always true. If you print in a heat resistant filament that is also food safe (TBH I don't know of one, but it probably exists), and use it for solids, like fruit bowls, cookie jars, and the like, and is dishwasher safe. It should be fine. The problem is that most people will not make the entire production path food safe. Too much liability for manufacturers, even with food safe materials.
Many youtube 3D printing influencers actually recommend brain dead shit like drying filaments with undisclosed ingredients in ovens or microwaves where they will cook food, and stupid shit like that.
It's not TACO or anything like that. It's just plain and brazen market manipulation.