I'd put myself in the pro-acclimation/socialization box camp, but it can be of varying effectiveness. I've had it work really well. A couple of days in the box, some initial aggression, and then a relatively calm release. I've also had it be useless. Resident fish ignore the new fish in the box and beat the crap out of it when released. Frankly, the most important step in introducing a new fish is to not introduce it ..... Huh? You should QT it first. For disease certainly, but also as a way to get the new fish comfortable, feeding and fattened up. With a fish like a Chalk bass, that will hide for a while initially, it needs those reserves to survive the acclimation.
I recently added a trio to my pretty aggressive tank. Figuring that they would just bolt for the rocks I didn't bother with the box, but I had them in QT for 10 weeks (started with four; three made it through) and fed them multiple times a day. Put them into the display and never saw them again for three weeks. Week four spotted one, then another, and by week five all three were out and eating. A fish that is underfed, or not completely healthy, will not survive this.