Regarding the editing of Srila Prabhupada’s books, Srila Prabhuapda rarely checking his own books for errors during his life time is not the same as never checking them–not even close.
Let’s say that a book has an average of one error every ten pages. That means that if you open up the book to any random location and read the page, you have a 10% chance of finding an error.
Now, if you do that repeatedly, the chances of finding at least one error very quickly approach a near certainty.
If you do this 10 times, then the chances of finding at least one error are about 65%. And if you do this 21 times, then your chances of finding at least one error are more than 90%.
So, the argument that Srila Prabhupada rarely checked his books during his lifetime is equivalent to him not having checked them at all is a gross misunderstanding of the probabilities involved. It takes a very small number of random trials to discover one or more errors.