Will you really though? Joules is a pretty distinctive look. If you're into gilets and printed wellies you probably shop there already, and there's only so many striped bretons and cheerful floral prints a person needs in their wardrobe.
I'd say their inadvertent 'stand for compassion' is hardly going to lead in an uptick in sales from existing customers, and it's definitely not going to draw the oh-so-edgy Black Pampers crowd, who so despise us middle aged mummies and our tragic style. And since there's any number of retailers all vying for our money, those who see 'misplaced virtue signalling' and 'pissing off core customers instead of 'stand for compassion' can easily go elsewhere. (Including eBay and Vinted, where Joules stuff is ten a penny.)
My guess is their 'stand for compassion' could be another nail in the coffin of an already struggling business. I doubt the warm glow of benevolence will be of much comfort to their shareholders.