A lot of the time, things like that are about feeling represented, even if it may not have strict accuracy. I know that I've seen that commented on regarding representation in sci-fi illustrations before. "Well, with the tech they have, why would there still be surgery scars? And also, what are the odds they'd still be using these particular pride flags that far in the future?" (Or, in a similar vein, say, people who use wheelchairs in a setting where magic or tech could theoretically feasibly cause that to be a nonissue.)
So, yeah. It's often not that people are hoping for complete verisimilitude or anything... they just want to have the opportunity to see themselves represented.