Bloodshed but the MC will be hurt in exchange for that. So yeah I side with the ML in this.
Well, I don't think MC will be hurt if Taeju will do anything similar to that. It's pretty obvious they are just holding Euihyun as hostage, for the deal that they want with Taewon Capital. That panel of Euihyun in Ch 88 just sitting on a chair, having his monologue, before the enemy opened the door, he looked like he's not hurt anywhere: he's arms/legs were not tied, he's not blindfolded or gagged whatsoever. So I think they won't hurt Euihyun bcs they know Euihyun is the key to get what they want.
The premise here if ML agrees to that deal then MC will be safe and sound and if not, then expect the worse.
They didn't harm the MC because they need him for the deal. But if the ML goes berserk then there's a chance that the deal will be called off or maybe start harming the MC to put pressure on the ML (to accept the deal right away).
given Taeju's rage at that time, I'm a bit disappointed that he hurt only one (or two?) Those hags stopping him from attacking the enemy? They should have been flying around before Taeju could say: "What do you want? Just say it." Yeah I know that must be the author's preference but I may have been expecting for more action scenes given that we're in climax. He didn't have to sweep them all, I just wanted three maybe five more rats to be punched in the gut and crumpling to the ground.