There’s only so many positions you can do with your fingers. Either it’s a sign or it’s not. Most if these ambiguous positioning are not. If the sign is supposed to have 2 middle fingers together? With spaces at 1st and 4th? Then 75% of the images don’t fit that because they have a space between the middle fingers.
Conclusion:
disregarded as a poorly substantiated dig with only 25% of image finger positions supporting the premise. Though the graphic gets points for being tidy