Yeah I’m not sure why the red eyes myself, other than maybe to visually tell the viewer that these aren’t the Jawas you’re looking for, from Tatooine.
Not really a big issue for me nonetheless. I can easily imagine some of them can conjure up a space adventure to another planet and that drier planets are preferable.
Does make me wonder out of nonsensical curiousity, do they build sandcrawlers? Seems so, given the cramped dimensions inside. Or stolen and retrofitted to their liking.