I don't think Cyke needs to know about the Moira stuff to work with Sinister and Poccy. I do think a story can be told where they're forced to work together, put aside their differences, and eventually decide they can work long-term-- but that story got entirely skipped to reboot the franchise / jumpstart the new normal i.e. Krakoa. Kinda like Cyke working with Magneto at the beginning of Utopia because their species were literally facing extinction at the time, and having Mags on your side is a lot safer than having him working against you. That Mags almost died to bring Kitty back from the Breakworld Bullet also counts for brownie points.
And, eh, maybe WoX will tell that story-- I don't know; I'm not reading any of the Marvel books anymore. I did see that Si is acknowledging the questions regarding the Crucible but it's too effing late to sound organic. Now it just sounds like cheap drama.
If anything, I'm more interested in spoilers:end of spoilers. Especially Rosenburger did what he did because he needed therapy. I'll give it until the end of the first story arc before deciding if it's the one Marvel book worth picking up.
Ruth and Legion
I vaguely remember that to be its plot, and that was my reaction, too. Art was pretty, at least, but, yeah--- when (most of) the X-Men are happily lopping off peeps' heads in the Crucible, should we really be feeling anything when they're killed? They literally have a priority list to boot their save file.