Floch: You dealt with the serum as if it was your own thing out of your personal feelings so your judgement was less rational. In short, you couldn’t give up on your precious thing, right?

Eren: Hey, do you mind…? shut up…

Floch: Eren, don’t you think yourself you are right over everything? So you didn’t give up to the last like a spoiled kid. In that respect, Mikasa was grown up.  

I would like to thank @cassonyas for pointing out something I hadn’t noticed before - probably because i was speed reading in a panic - which is the main reason why Levi punched Eren to begin with. As you can see, Levi never actually handed over the serum to Eren. Here he is still holding out his hand for it while Levi pulls it to his chest:

Levi doesn’t hand it over, and ch. 83 ends with Eren’s angry and threatening head bunt:

Then in chapter ch.84, we see Eren actually grab and tighten his hold on the serum, even after Levi tells him to move on:

After more arguing Eren still refuses. When Levi eventually says: “And you’re right. But since Erwin has surfaced here, I have to inject him.” - that’s when Eren outright yanks the serum towards himself, probably because he realized Levi was dead-set on his decision.

And that’s when Levi had enough and clocked him in the face: 

Zeke got warned about Levi and Erwin, not about anyone else.

That feeling when you get more respect from your enemies than your own comrades who are ready to slit your throat and throw you away like trash even when they swore to give their hearts to humanity and remain loyal.

AND THESE PEOPLE KILLED ERWIN THEMSELVES 😂😂 😂😂 😂