Regarding photo difference this has likely to do with part of the audience which use such a mem maker kapwing site: idiots. An ip lookup who they are and/or coming from would have been interesting.
But many of the examples in the blog I could never ever imagine to write. No happy man or women would. Thus I'm interested who would? Are there any (aggregated) trends?
That there are idiots is a given. Neverthelesss, I would still present a down to earth real picture (not from you personally of course, but also not some stock foto or robot). Reason: if you spend the time/cost to provide high-quality personal assistance (opposed to some random chat-center no-help) you might as well show it (and filter out the idiots - you wouldn't want to provide services to them anyway!).