There is a completely different angle that is rarely addressed in these discussions. Purim is a extremely precious Yom Tov for which the rejoicing and celebrating is an integral part of the mitzvah. However, it seems to be taken by many to fulfill a quite different role.
The observation that is repeated every year is that Purim is accepted as a single day when all restrictions and limitations are suspended. One is restricted from drinking and getting intoxicated all year. So, following this logic, Purim is a time to let go. Well, I’m afraid that this is antithetical to Purim. It is a time to be aware of the level of kedusha which we can attain during golus, when we can be mekabel Torah at a level that we could not achieve at Har Sinai. Every Yom Tov has a mitzvah to celebrate, but the celebration is secondary to the other aspects of the Yom Tov. Here, it is center stage. We even make our bodies celebrate. But it is NOT about frivolity, drunkenness, losing one’s ability to remain an oveid Hashem. The Poskim that talk about ad delo yoda being fulfilled with sleep, do not say that the sleep is the mitzvah. The mitzvah is drinking to the level of sleeping, the shiur of how much drinking constitutes the mitzvah. Boundaries exist on Purim, and turning it into the equivalent of seudas Achashveirosh is opposite of what Purim stands for.