I've only got a 2016 one. I've had to note the alterations myself. A reprint must be due. Pointless saying to put it on the website because it seems to be older than Noah's Ark. Don't know what the most recent post on it is.
I don't think it is cruel. On the rare occasion where they are stupid enough to be zapped, it is only enough to shock them into not trying it again. Usually they sense the danger and don't even try.
The individual should ensure their own safety, however, it could work out cheaper if bought centrally and there could be an argument for individual Clubs to ensure the safety of its Members.