Note that the studies do not say multivitamins are worthless, nor does it address any other health areas except those three. That is just the headline sensationalism.
Did you miss the part where the TFA's title said "Stop wasting money on supplements"? The article itself is trying to make the argument that it's a waste for most people to take multivitamins. But the reason given is that it doesn't prevent death, heart attacks, cancer, or dementia.
Guess what? Hiring policemen don't prevent natural death, heart attacks, cancer or dementia either. Neither does wearing a seatbelt. Neither do all those safety regulations on cars and aircraft. Are they going to write an editorial next saying that we should "Stop wasting money on police, seatbelts, safety regulation", and cite studies showing that they don't prevent natural death, heart attacks, cancer, or dementia?
Vitamin deficiency causes all kinds of random problems that are often not quickly diagnosed. Do a cost-benefits analisys. It's a low probability that I'll have a vitamin deficiency, but if I do, vitamins will help a lot. Given how little they cost, it seems like a no-brainer.