Yeah would assume moving on from Davis, but the appeal for me is a few things. I think you can interchangeably play Fox, DDV, Monk, Mitchell together, they're all still so young and already good (DDV 25, Mitchell 23, Monk 24, Fox 24) with conceivably more upside in them getting better, and Monk fills in the only glaring hole that you don't get with DDV, Fox, Mitchell with his elite spacing and shot creation ability. Monk is also a ridiculous athlete who's another guy that should have a lot of fun with off-ball movement and receiving passes from Sabonis.
Unfortunately with Finney-Smith off the market this summer, there's just not a great bigger wing market this year. The Martin bros are kind of the only guys I see that fit the bill in terms of already being good with some play upside still built in. Monk isn't perfect in terms of being a traditional wing, but he's good, young, fills a pretty big hole with the projected core and adds another build around piece we can lock in. The Kings still need another ball-handler/secondary playmaker type to fill out the team, so may as well come in the form of an elite shooter like Monk who can provide those attributes as well.
I like Holiday a ton too, but he's on the older side and only signed for one more season. T.Davis has had great moments, but he's only signed one more season. Harkless only signed one more season. So it's very likely most (if not all) the new acquisitions outside of Sabonis and DDV aren't long-term pieces for us.