Yes...hello...the statement you quoted makes that quite clear...
Ok good. Now it appears that you're ready to accept the fact that the number of mathematical operations to solve chess is unknown, and therefore you nor anyone can say that it will never be solved.
...It's just that that number or pruned positions is insignificant compared to the total number of positions...
And do you remember the part where not all positions of chess need to be examined to solve the game?
Yes...hello...the statement you quoted makes that quite clear, even without your misbegotten tree graphs.