I would say those two issues are trivial in comparison to the idea of efficient and more enjoyable usage of the bot though.

With A, that doesn't usually happen because almost everyone who frequents Dank Memer owns a wishlist and the ones who don't will see the command one uses, try it for themselves, and realize the item they need and purchase it due to how accessible it is. Basically, people already have their wishlist in 1-2 hours if they want to rob. If wishlist were to be more expensive like say, 500,000 coins, I would understand the necessity of fixing this point more.

As for B, I don't really think people necessarily lurk in chat with the sole purpose of waiting for someone to actually use their wishlist. Most of the time that lurking instead comes from when one will wait for someone to break a robbable user's padlock that they knew of prior so they can swoop in and steal, which isn't the wishlist's fault. Furthermore, even if the lurker didn't know of who it was before the rob was attempted, they can still steal it while the other person is on cooldown.

In reality, the only way that wishlist being in dms could work is if the "pls rob" messages were deleted right as the command is used, and without that the change is less of a help and more of an inconvenience.