I’m not sure what you mean there; the only difference is that it puts helium and the f-block elements in the grid, rather than floating off on their own. (I’m ambivalent whether the s-block should go on the right, but it does make more sense design-wise).
My problem with high-school chemistry teaching is it focuses on learning a lot of tenuous “rules” which create more confusion than the actual chemistry they’re supposed to explain (and which you spend your first year as a chemistry undergrad unlearning). Like, an element’s “group” supposedly determines its chemistry, but only if it’s in group 1, 2, 17 or 18, and it’s not too heavy, and isn’t hydrogen, and if you pretend helium is in group 18 (even though you can’t then explain what a group is) …basically it would be a lot easier to just stop trying to make the periodic table explain more than it does.
The Janet form still has all the “alkali metals” and “alkaline earth metals” in the same column, and you can note that they have similar chemistry. And you can explain why hydrogen and helium don’t (because they don’t have filled p-orbitals). But really it’s just an ordered list of elements, showing what type of orbital is partially filled for each element. Which is all you can really tell from a periodic table. If you want to know the preferred oxidation states of lead or chromium, you have to look it up elsewhere; there’s no point pretending the periodic table alone has all the answers.
