If WP:IAR were deleted, people would not suddenly say "Oh, my goodness, I see that the policy has changed, I will now start slavishly following the rules." So there's no particular reason to delete it.

But if WP:IAR were deleted, people would still be bold and occasionally ignore the rules. So there's no particular reason to have it.

Wikipedia is a community of people that have the technical capability of performing certain operations within Wikipedia. Wikipedian policy is whatever it is that Wikipedians customarily do. "Policy" statements inform, they do not coerce.

It would be appropriate to delete WP:IAR if there had, in fact, been a sea change in general Wikipedian conduct, toward the direction of rigorously and literally following written policy at all times.

Should we consider deleting "Wikipedia:Be bold"?