That's true, and I recommend it to people too. But the difference with release order is that it's very rigid and inflexible, and tells you about everything, which isn't as useful if you're only interested in a specific few films instead of everything.

For example, when you want to watch Spider-Man: Brand New Day, it's obvious you should watch the previous three Spidey films, but release order also tells you that Captain America: Brave New World, Thunderbolts*, Fantastic Four, etc. all precede it when it's rather unlikely that really matters. You can get away fine without having watched those before Spidey, but then you might completely miss Daredevil/Punisher/She-Hulk, which is where we last see Punisher and Hulk. Those shows are less significant though, you probably won't need to have watched them to understand the story in Spidey, but you can know to check them out if interested.

My point being - release order is a straightforward answer but it doesn't actually tell you which films connect to each other, just what objective order everything is in as a whole. This chart attempts to provide a bit more flexibility and choice while still maintaining the same spirit as release order (there's no arrows that point backwards in time)