I agree bespoke software could have bugs, of course, but this bug seems unique to excel. I would say excel is a tool that makes it easy to solve _easy_ problems.
I do not think Excel is simple. IMO it is less intimidating to users because it is graphical and does not look like programming.
> It's not clear when "simple" stops working or how to recover from it.
Excel row limit could clearly fail in a non-silent way, and it would be a better tool. They chose "simplicity" by ignoring errors.