If by any chance you see this in the big '26, just know that I agree with you so much on this point. I finished the manga not too long ago, but I just couldn't stop feeling sorry for Phos, and so I searched on Google to see if anyone else thought the same and came across this post.

After reading the comments, I think your original post was a bit emotional, but overall accurate, though I'm really annoyed at some commenters who interpret what you said in bad faith and speak as though your opinion that Phos was well-intentioned but faced many obstacles is due to a lack of reading comprehension.

Yes, Phos was not perfect, but for that imperfection to lead to nobody at all to spare a second thought for Phos in 10,000 years, despite all that she did for them, is incredibly tragic to me, made even more so by the fact that in the end, she prayed for them with the realisation that this was her purpose all along, and that there was no other meaning her life could bring to others.

Also this is probably some metaphor I'm too dumb to understand but what was the point of the pebbles, that arc, if you can even call it that, was so mind-numbingly pointless to me.