Given that the discussion has now turned from the propriety of banning a peirush that the Eida Charedis Beis Din has declared “kulo kodesh” (!!) and has veered towards Ibn Ezra, here’s what Ibn Ezra had to say about Rashi’s peirush, in his grammar sefer Safah Berurah:
??? ??? ??? ???? ???? ????? ???? ???, ?? ?? ???? ???: ??? ???? ???? ???? ?????, ????? ??? ????? ???. ??????? ????? ??? ?? ??? ???? ???? ??? ???? ?”?, ????? ???”? ?? ??? ???, ???? ???? ?? ??? ?? ??? ???, ???? ?????? ?? ??? ??? ??? ???, ????? ????? ?????? ???? ??????.
(In fairness to Rashi, the question is not whether Rashi’s peirush was valuable and wonderful, but whether it was on the derech of “peshat.” I know of NO Rishon, not even Rashi’s grandson (Rashbam) who considered Rashi’s peirush by and large al derech peshat. Not Ramban, not Radak, not Bechor Shor, No One. Yes, it’s “ikkar”, according to Ramban, but not peshat.)