When someone says they've lost their knitting mojo, they most often mean that they don't really feel inspired to knit right now. Yarn isn't jumping into their arms and screaming knit me, patterns aren't demanding to be cast on "right now" and somehow they can always find something else to fill their time.
That isn't me right now.
What I mean when I wonder if I've lost my knitting mojo is "how have I been knitting this shawl forever?", "why have I not touched those socks in weeks?", "when will I get round to casting on for those garments I swatched for?" and "why have I spent more time ripping out rows than knitting recently?". (And not even ripping out, I don't trust myself to rip anymore, every stitch must be tinked one by one).
I have lost my knitting brain.
I've lost the ability to count to 6 reliably, to repeat the same movement over and over without accidentally substituting in something else, and to read my knitting so I can realise how to fix that mistake quickly and efficiently rather than ripping back endless rows of perfectly fine knitting.