Anchorhead looks impressive at first glance in that still but if you take a close look it also captures the full length of it. It’s still a small town compared to Mos Eisley which houses at minimum 94 large docking bays. In the old EU Mos Eisley had 362 such docking bays and it’s probably the same in the new canon. That’s a much larger scale than any depiction of Anchorhead could support.
Good point. The issue of the docking bays reminded me strongly on the technical manual for Tatooine. One of my favorite star wars books as a teen.
By the way it’s actually quite funny that Mos Eisley, as it appeared in the OOT, before the special edition changes, looked to be either to have the same size as the version of Anchorhead from Kenobi or was even smaller.