Yes let MC go around slightly grazing all these high status women for them to feel good for a few seconds before coming to and asking the guards to get him for touching them, if he hasn't already been stabbed because of what he is doing. The enchantment only works if he does the finger, and that would take too long to go through each. He would be arrested or stabbed by the guards by then. Even if he got one or two of the guards disabled by magic touchy, he's just out of the frying pan and into the fire. He's in a literal lions den. Remember he is just a normal guy. He is bound to get stabbed by atleast one of the guards while trying to escape even with his power. He only got lucky first chap with knight captain because she was not on guard, was just by herself, and her knights weren't in fighting mode either. All the guards would be on high alert for him if he did this, and definitely wouldn't just approach one by one.
By your logic, he should have already been stabbed and killed in chapter 1 btw.
But no, even after the girl said don't touch me, everyone just stood there blushing and doing nothing. All it did was confirm that there is a lot of leeway granted to him due to the rule of Hentailand.
Also, to go back to that chapter 1.
Page 35. He touches her.
Page 36. She drops the sword, the rest of the guards are confused and immediately worried
Page 37. They're all too flustered to do anything because apparently the power of granting orgasms is later somehow hinted to be somewhat unique to this guy and requires otherworldly force to entrance women, which actually creates a lot of questions about this world, as to whether sex is even a thing which creates a ton of world building consequences, but we're in quasi-hentai land, we're not supposed to think.
Page 38. She says Stop Don't Touch Me.
Page 39. She orgasms, good for her. The guards all stand there with their swords still in their scabbard. About 8 guards are shown in the last panel just standing there. So while him not touching them doesn't get them entranced, we can confirm that him causing pleasure to someone creates an AOE effect of getting the other women looking to be entranced.
Page 40. Not a single guard has her sword drawn, everyone was just watching the finger bang bang based orgasm doing jack shit.
No, he would not be speared to death.