Whereas if they find that the tomato has 10% as much β-carotene as a tomato should or what have you, somebody will write an article about it that six in a thousand customers read and people will keep buying those tomatoes because they're cheaper and not even required to be labeled differently.
It's the difference between "so bad that people won't stand for it" and "worse, but people tolerate it", and the second one can be more of a problem specifically because people don't get mad enough about it to fix it.
It only takes one. Also, who says they're doing it at home? One hypochondriac willing to stay after work to use the equipment to to quell their fears (or substantiate them) is all it takes.
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Here’s the Taco Bell hot sauce: https://www.instagram.com/reel/C-A3FfOueRm/?igsh=MzRlODBiNWF...
Guess what. There's a lot of ADEK vitamines (fat soluble) out there. There's a lot stored up in our bodies. So much so that you can get a disease by pumping up the stores too much! Typically: TWO YEARS worth. And if that didn't set off a flag in your mind "oh, you mean vitamin A, of which two units are metabolically extracted from beta carotene" than you need to shut up right now throwing around beta carotene as an essential nutrient because you don't even know fundamental human metabolism!
Long story short, you know what else is really good at handling sloppy near-perfection-but-not-perfect differences -- -- -- biology. We've got 30% or so of our genome made of self-replicating viruses that snuck into a germ cell a billion years ago, yet somehow it all works, we've got 10 gorillion cells made from a single cellular machine at one point, building a functional reproductive-worthy body, and somehow that all works. People understand gusts and ideas as to what it's all doing, but do we know all of it, maybe not even most of it? No, we don't even know. It's like how magnets work, nobody knows. But big picture, the body has some capacity of adaptation and ranges of acceptable conditions, yet this TOMATO HYPOTHESIS seems to view the body as some sort of formula one engine that requires micrometers level clearances so it can go 20,000 RPM instead of the typical 6,000, and oh the medical castastrophe that should happen should someone eat a tomato of diminished nutritive content.
Now, I don't know what kind of world we live in here. Do we live in TOMATOLAND where people eat with every meal ketchup and marina sauce as the main dish? Are we worried that in TOMATOLAND that a 90% drop in essential amino acids of our favored cuisine will cause problems in population health? Because I'm pretty sure if a damned tomato comes up 90% short on beta carotene, that said food eater has TWO WHOLE YEARS to eat NON TOMATO FOODS such as CARROTS or FORTIFIED FOODS WHICH IS MOST FOODS which will easily replenish their vitamin A levels.