If, even in a seat the the SGP may have judged unwinnable, Sparkles is the best calibre of candidate they can field, it suggests bad things about the party as a whole.
It suggests the party, or at least the numbers active in it, are tiny or they'd have a larger number of prospective candidates almost any one of which would be better than Sparkles. It suggests a degree of capture by people who are comfortable with (or afraid to complain about) rather 'out there' behaviour.
There's group think, a lack of exposure to a spectrum of opinions, in the Greens that, with all the expulsions, looks set to only get worse. Be interesting to see the trantrums and the reactions to the trantrums following the latest news with Sparkles.