It is indeed the first game, but these are all just random monsters you run into in dungeons and the overworld. At least bosses tend to have some kind of story justification. The same criticism about the enemies you fight being kind of silly and random could easily be made of many classic franchises, like Final Fantasy. insert picture of the haunted house enemy from FF7 here

Loved the science fantasy western setting they had

I'm currently playing through the second game but I have to say that at least judging by the first two entries, despite the series' reputation as the "Western" JRPG franchise they're remarkably light on actual Western elements. Sure, there's some spaghetti Western flourishes to the music sometimes, some characters wear duster coats and the landscapes tend to be kind of arid but everything else is just regular JRPG stuff through and through. (Also plenty of JRPGs throw in random Western elements anyway)

Also with regards to your edit to your previous post, I think that's just because modern anime audiences and creators are more familiar with RPGs than they are with fantasy literature or the things that inspired fantasy literature