I didn't notice any, ahem, "SJW" stuff in Undertale myself. Just like with the alleged memes that aren't really there, the game has been used by the so-called "SJWs" for their own purposes.
I'm not an Earthbound fan myself. I mostly play RPGs for their mechanics, which these sorts of RPGs just don't really have / aren't about. However, Undertale is not Fallout 4. The latter is incompetent and janky in everything it tries to do. Undertale, however, achieves its design goals competently and manages to make different design elements, from combat and story to music, function coherently together, as well as breaks the mold in its specific subgenre. All of that is something many game designers wish they could achieve -- but can't. The rest is simply up to whether you enjoy this kind of game or not. It's like if I was shitposting in the Witcher subforum because I think Witcher 2 and 3 are unbearable popamole crap (which I believe they are). However, I just ignore that subforum instead.
I'm not an Earthbound fan myself. I mostly play RPGs for their mechanics, which these sorts of RPGs just don't really have / aren't about. However, Undertale is not Fallout 4. The latter is incompetent and janky in everything it tries to do. Undertale, however, achieves its design goals competently and manages to make different design elements, from combat and story to music, function coherently together, as well as breaks the mold in its specific subgenre. All of that is something many game designers wish they could achieve -- but can't. The rest is simply up to whether you enjoy this kind of game or not. It's like if I was shitposting in the Witcher subforum because I think Witcher 2 and 3 are unbearable popamole crap (which I believe they are). However, I just ignore that subforum instead.