Says common sense and any half-competent writing.
So ... basicaly, says you.

They're epic level characters.
Yup ... until they are not anymore.

Could we just stop using these kind of one liner debunks with no substance that exist solely for provoking further yes-no argument or getting the last word?
Since you apparently disagree, could you rather explain why bringing back the likes of Minsc or Jaheira as
low level characters in BG3 would make their story after Throne of Bhaal better rather than ruining it in a cheap attempt to cash in on fan favourite characters?