I disagree with your usage of the verb "to be". :-D

And no, it's not an E-Prime thing - https://en.wikipedia.org/wiki/E-Prime

Until we have demonstrated or observed a body with a non-zero rest mass moving faster than light, we can't say for certain that faster-than-light travel is possible.

About all we can say at this moment is that FTL travel might be possible.

Great article though, have some claps.