Yo they do this on purpose, you see it all the time with roadside stands. Weird and nonstandard signs are more attention grabbing and indicate a true smalltime business, so even commercial roadside stands are starting to have signage like this. You’d do well to give more credit to the intelligence of these people - the motivations behind why they’re like this are invaluable when being forced to interact with them (be thst interpersonally or politically)