As you will have by now seen, the most recent argument you have offered for not wanting the M&G; image was rejected as not being entirely on point. I point it out to indicate that perhaps your "familiarity" could do with something of a refresher course. And those elements you mentioned wishing to do away with all non-free images? Those folk are pretty much considered....well, let's just ay that they are in the significant minority. So long as Fair Use criteria is adhered to (as in, say, the Mirth & Girth'' image), WP is protected. While it is good that you strive to use only free imagery, be aware that free is not always going to be more encyclopedic than non-free. The guiding principle is whether it is of encyclopedic value, not whether it is free.
As the image is of the subject of the HW article as well as being on point int he M&G; article, it will be staying. Thank you in advance for seeking out a refresher course in understanding fair use criteria. -  (cast a spell)