@Whatamidoing-WMF requested a Flood group on Officewiki (for humans to assign themselves the 'bot' right as needed). It exists on Wikidata (others, too, I think).
I don't have an enormous issue with everyone having the ability to do it though I'd probably lean towards sysops/crats being able to add/remove to anyone. This is less a question of trust and more just forgetfulness. The "oops, I've been on flooder/bot for months now" accident is a lot more common on private wikis and is even more likely for users who are less comfortable/understanding of the interface and consequences.
but, as said, not a huge preference.
Are there any strong objections to modifying this to allow sysops to add to this group as well? As a sysop on the wiki - it can be a bit of a hassle to ping a crat to do mass maintenance tasks.