All of them!
Paying money to read an article. Bs.
What really matters is whether or not you have noodle arms and legs. If you do, don't worry about minor details, eat well and hit the gym. Whey has its place. It's convenient to pull out a shake mid morning and neck it on the go, to help get the aminos in. Far more convenient than pulling out a foldable table, plates, crockery, chicken and gravy. Excess whey can cause an AKI though. I.e. people consuming it to an excess. I.e. miss informed. Like some on in the comments section. A good diet and enough time to chew it all means you don't need to use whey to reach macros. But it's rarely that simple when you have a full time job and life gets in the whey.
No, you didn't post study results to back your claim. You copied and pasted what someone else took from the study and it doesn't back what you said. And neither does the study you've just linked? The fact that neither of the two examples you tried to use don't support your claim that whey protein is useless says something... It's not debatable whether whey protein works. It's an easily digested, amino rich dietary protein source.
https://nutritionstudies.org/no-whey-man-ill-pass-on-protein-powder/ https://www.health.harvard.edu/staying-healthy/the-hidden-dangers-of-protein-powders https://www.health.harvard.edu/staying-healthy/extra-protein-does-not-build-more-muscle http://darwinian-medicine.com/10-reasons-why-you-shouldnt-use-whey-protein-supplements/ some light reading from Harvard