The guy says that he only recently realized that cleaning isn't intuitive so people need to be taught. This is for people who maybe haven't been taught how to clean or want to freshen up on their skills :)
I like this kind of video. I think he could've kept it even more basic though.
Imo, the isopropyl alcohol is unnecessary. Just clean your surfaces and keep them dry afterward. Any potential pathogen needs water to multiply. Take that away and their numbers will be limited to a safe level.
Disinfection is superfluous if you adhere to clean+dry, and it is useless if you clean but leave surfaces wet
I used isopropyl for a bit and found it highly underwhelming. It wasn't great for cleaning and it evaporated way to quick. It has it's uses but not in the house cleaning department
A 1:1 mix of White vinegar and water is an ancient and cheap cleaner. The smell doesn't linger long at the correct dilution and it kills a whole bunch of things.
Add a little liquid soap for nonporous surfaces like counters and stove tops, great grease and stuck-on fighter especially if combined with a scrubber. Damp cloth to wipe up after and you're shiny.
It can be convenient when cleaning stainless or glass since it can dissolve grease and dries up streakless. Otherwise window cleaner spray also works amazingly.
Otherwise no idea why one would use it on other surfaces.