I did consider no tools on both sides to be equal tools.

only if both people have the same starting point, but they don’t (in the illustration they don’t because the tree gives more fruit on one side, in reality this translates in to privilege, or lack thereof - a white person has more “fruit” and “tools” available to them than a Black person. An abled person has more “fruit” and “tools” available to them than a disabled person, and so on).

The exact same circumstances that punish the one kid in the first panel still punish them in the second. If anything they are worse off in comparison since the additional provided tools don’t serve any purpose for them but do help the other kid.

That’s the point - merely providing superficial assistance or tools or whatever, without changing the core of the problem (here - the fact that the tree leans only to one side) doesn’t solve anything.

So providing a ramp to a building might help wheelchair users (but probably not a Blind or Deaf person for example) very superficially to access that one building, but it doesn’t change all the other inaccessible buildings, or the accessibility issues faced by the Blind or Deaf person (or whatever other disability that doesn’t require the use of a wheelchair), nor the system that sees disabled people as reasonable to exclude because we take “too much” work to cater to (which is a core and very real example of systemic ableism).

Edit just to add: the one main flaw I find with this illustration vs the one with the boxes (here is my personal favourite example), where the obstacle is man made, is that the tree, ie the system, is made to look natural, when in reality it is anything but.
Capitalism (the core system that is the tree, and it’s branches are racism, sexism, ableism, queerphobias and so on) has done a fantastic job convincing society of the lie that humans are naturally greedy and selfish, and of “social Darwinism” and all that eugenicist crap, when in reality humans are hardwired to work together.