I personally think the change negatively affects gameplay, without actually fixing problems. The heart damage applied always seems to be edging on the threshold for any patients I receive and scan for other problems, and I get a fair few patients suffering from real problems due to the changes. My main problems with it, can be summed up easily in two main reasons.
This change adds nothing: It doesn't fix a problem, create new ways of doing things, add whole new systems, etcetera. Essentially, the change seems meaningless, and without purpose.
This change negatively affects gameplay: This change adds tedium, something that really shouldn't be in surplus. Vending machines become something to be avoided and ignored, and when they aren't ignored, it simply causes issues for other players.
Adding toxins to the food, like others in this thread suggest, would be the same thing, if not worse. Toxins would actively cause pain, damage, message logs, etcetera, again, for no real reason other than "B-but junk food isn't healthy irl tho". This change causes anyone who pays attention to the change to just avoid vending machines entirely now, and anyone who isn’t paying attention to the server’s changelog, and happens to eat one too many packages of raisins, becomes the equivalent of a K’ois eater. This change adds tedium for no actual mechanical or RP benefit. It's just in general, another thing new or infrequent users might get screwed for, added without viable reason.
Remove it please.