It is good to see that the dude is genuinely liked by the members of his class. And it does make sense that those trash talking him would be the outsiders who don't spend actual time with him on a daily basis and so just make superficial judgement about him.
There is a food in my country which is Called the Drunk man who fell in the Stairs
Which is really sweet but when you swallow it it becomes really bitter
Basically this manga plot
I couldn't stop smiling like an idiot throughout the whole chapter because of these two dummies' cute banter
Then again, I remember that the truth has to come out sooner or later and I get sad all of a sudden