For someone who is just starting out, this is a great way to see the different types of film and how they respond to similar lighting situations. It's a good starting point for those who have absolutely no idea where to start. They explain the important the differences well, and the comparisons side-by-side would undoubtedly help newcomers to see how films differ when exposed at box speed - and let's be honest here, for most people when they start out, they shoot the stuff at box speed.
It's not until they take a more in-depth interest in processing, which they may venture into determining their personal EI. For those who merely shoot and scan, knowing that Delta 400 is slightly more contrasty to TriX may determine their choice of film on a particular day or simply make it easier to choose 400 film. They like what they see, so they shoot it.
Testing isn't for everyone - this forum has many members who enjoy tinkering and testing different films at different speeds, different films in different developers etc., but for many, this is too much work. They just want to shoot a film that gives them results - if that happens to be TriX, shot at box speed, so be it. If it happens to be FP4 shot at box speed, that's great too.
I do agree you cannot truly judge film on screen - but guess what? I could see the differences, and although they didn't show grain structure, they discussed it well enough to understand that 3200 was grainy as hell, but that still held its tonal range. This is what new film shooters want to know. Honestly, did any of us know what film to shoot when we bought our very first roll? Did we know how development changes in time/temp would affect its results? Did we understand how some films were more contrasty than others? Chances are most of us probably didn't, and we started out shooting at box speed and then began to learn from there how to adjust our shooting style/equipment to give us good results.
If these videos help entice people to shoot film, it can only be a good thing. We all need to be aware that not everyone has access to a home darkroom/has time to develop films themselves and this little video is giving them a chance to get out there and (basically) start making great images from the outset, without needing to test, test, test.
I read books on the subject, but back when I started out, YouTube didn't exist, you learned from books and magazines. Guess what? Most photo magazines today are digital - rare to find any with analogue developing/comparison articles, so where else do newbies have to turn to get their information? If I started out today, I'd use these types of guides to help get me started. If I enjoyed it, I'd then look at some books and keep moving forward.
This guy is offering a tangible experience in moving form that we all used to get from reading the vast quantity of photo magazines on offer 20-30 years ago. Sure we may have moved on from this type of information package, but let's not knock it for offering a new stable of photographers the opportunity to enjoy the medium we all love.
After all, we all had to start somewhere, right?