Using the 'Lena' image is only a signal for those who want to signal something. For most people it is just the standard graphic to use when presenting image processing software. There has been a movement to ban the image but that movement is most likely not nearly so widespread as some people seem to think it is. It wholly depends on which 'bubble' you are in whether using that image is a deadly sin or just daily routine. I suspect Goyal used it in the latter way, not to send some signal to the Image Inquisition.

I want to point out some of the language you've used. You've brought up "current narrative", "crusade", "sin" and "inquisition", when really you seem to be saying "the image doesn't signal anything and the push to remove it is overblown". I disagree with you (for example IEEE has banned it) but I do respect you believe the actual movement that disagrees with is small but influential.

Instead however I would ask you look at the words you used, where they came from, who said them to you, and why you brought them up here. They are strangely charged words for a debate over a picture.