His video on Water Purifiers only measures one dimension of water purification: TDS measurement. This leaves out a whole world of other aspects to consider when testing water and filtration quality. While TDS can give an indication of cleanliness of the water you can only glean from what you can measure, to this end the TDS measurement will not catch all contaminants in the water because it relies on electrical conductivity.

Also he does not disclose that his TDS measuring device is actually bundled with one of the devices he is testing. Should have used a third party tool to verify that it is giving an accurate reading instead of a unit bundled with one of the water filters as a marketing ploy. It gives some doubt as to how seriously he takes his other tests. These are the things you miss if you don't actually know any better(I assume the majority of his audience have not looked into what makes good water filtration before watching his video).

Nevertheless, the fact that he is really the only one doing these kinds of tests is enough to give him some sort of super reviewer credibility.

I automatically upvote his vids now. I hope people get inspired by him.

Project Farm is poorly controlled, sample-size-one, poorly-designed-but-very-specific "testing." It's entertainment, not actual useful product testing, and a good example of this would be his "let's see how many bolts this impact gun can remove in X amount of time" - each time a bolt is screwed on and screwed off, it polishes the threads, changing the amount of resistance.

It's of slightly better quality than the usual youtube comparisons.

Channels like his are wildly popular because corporations prefer inexpert entertainers aka "influencers" and "creators" over product/market experts, so they shower the popular ones with free shit to "review."

This is one reason you see e-bike companies heavily courting the tech press; the tech press know fuck-all about what to look for in a bicycle, so for example, they don't notice that the bike has Chinesium bearings that won't survive being ridden in the rain, terrible no-name tires with little flat protection and high rolling resistance, and brakes made of chewing gum that perform much worse than proper offerings from major brands.

They are great but unfortunately can't test but a few options for any one type of tool

Agreed. He's doing fantastic work.