Oh yeah, I assume Eren keeping his mouth shut and letting Paradis' once-in-a-lifetime chance to use Zeke to gain control over the Coordinate go to waste, leaving them defenseless when Marley would return would have been a perfectly viable option, right? Or maybe you're just gonna use the excuse that he simply talked because it was no longer a theory and not because Zeke had become an option or whatever, and that he somehow could've known in advance that the 50 year plan was gonna be a thing.
The coercion thing was already debunked god knows how many times but you're still clinging to this shit because in your twisted mind Historia's this pure divine being who would curse herself and her whole descendance for the generations to come without a second thought as opposed to a human being with feelings and fears like everyone else. Most likely her almost crying after Eren took her defense meant nothing, or maybe you just blocked the page out of your mind.
Yelena couldn't have met Historia alone and she had virtually no leverage against her: if she talked to anyone the whole plan was ruined. Eren gained nothing from forcing her into doing something that would ultimately save her and everyone else if whatever he had planned succeeded either. Whatever transpired between the two, the choice was hers to make, and she made it.
I don't even know why I'm bothering arguing with your dumbass though, since Historia will never be good enough no matter what she does or thinks so long as Eren's around.