It’s an interesting one though as Stuart McDonald is a lot of things, but he’s never seemed overtly daft.
in fact over the years there’s been comments that he seemed more Labour than SNP until Labour just became utterly shit and he got the Indy bug
(I used to live in that area for a few years when DH worked there)
although he’s very very pally with Jamie Hepburn, the MSP, who is very pally with HY so maybe that’s the link