I just don't believe that at all. The Marvel rumor mill is full of idiots doing shít for clout and getting backed up by breathless commenters desperate for any info. If the Fantastic Four isn't radioactive after the complete disasters of their franchise attempts, the X-Men will be fine.
Haha, yeah, I would think that would be a working title. Though I have seen some float around the idea that Feige is hesitant about using the X-Men name given the baggage from the Fox universe, or that his focus is more so on establishing mutantkind first before delving into the X-Men in a rebooted franchise. Who knows, I am just ready for them to start f.ucking saying “mutant” in the MCU (which I think will still happen in phase 4).