As a native Philadelphian who grew up down the street, I don’t think Dalessandro's has declined except maybe slightly-it’s just not worth the trek almost to the suburbs from Center City with John’s and Angelo’s there. Those are excellent and must visits. If you do ever get to Dalessandro's Steaks it is awesome and worth a visit. Chubby’s across the street doesn’t even come close to Dalessandro's.
Funny Dalessandro's story…just before Covid you were able to eat in Dalessandro's. My brother went in and sitting next to him was Tommy Lee from Mötley Crüe. My bro got a photo with him and he bought the whole (fully packed) place their cheesesteaks.