Glad to see others remembering Mx0. I love that manga, it's sad how it ends when "the best part" should have started. But what it's there is great tho, If someone reads this I do recommend to read it even if it has an "open ending"...
I would say it's pretty similar concept to Mairimashita. But...
I can't believe that just saying that and adding the "acting drunk" makes that much difference that the author doesn't have problems. Like I get it, they are in the "clear" legally. But by all means, this is exactly the same as promoting drinking. As it's clear that they had the exact same...
This ending was the bare minimum to call it an end... it doesn't even show what happened to other characters.
But it's okay, the story was getting too redundant already. It's okay to end it here.