If by "your advice" you mean my personal comments on this subject then,
no. If you mean "your advice" as in what I put in my robots.txt then
yes that's a shame.
>or that individuals need an opportunity to learn, and to perhaps
>make a few mistakes?
if the mistakes are made *despite* knowing about methods that prevent
such mistakes, and those methods are ignored in part or in full, then
yes, that's a shame too.