Eren just called to say he didn't wanted to be disturbed while he was killing everyone. You know, genocide requires concentration ;/
That said ... the only explanation that doesn't make Eren a moody teenager with way too much power in his hands given his actions is that he foresaw that he needed to be killed by his friends after becoming a villain. For all of his talk about freedom, it is not that he cares much for the freedom of neither the non-Titans or the Titans he is using in that Rumbling of his ... or, to be honest of the Eldians he is suposedely fighting for...
That said ... the only explanation that doesn't make Eren a moody teenager with way too much power in his hands given his actions is that he foresaw that he needed to be killed by his friends after becoming a villain. For all of his talk about freedom, it is not that he cares much for the freedom of neither the non-Titans or the Titans he is using in that Rumbling of his ... or, to be honest of the Eldians he is suposedely fighting for...