You know, in the last period there have been superhero films that have underperformed, films that have been box bombs, films that have been failures from the point of view of critics and audiences, but none have been the perfect storm that Madame Web was. No one has so perfectly represented the concept of failure in the public imagination, becoming an object of derision even at public events such as the Oscars.
I've been looking for other superhero movies with similar infamy and perhaps the most recent candidate is Catwoman. But really, it's not comparable having budgets and scopes so dissimilar to MW. Catwoman was a "relatively" small film, perhaps at most aiming for a sequel if it had been a success. MW wanted to be a piece in a great saga that would take the Sony-Spiderverse to new heights.
Probably the most similar example is Batman & Robin, which single-handedly put an end to the era of Superhero films that began with '78's Superman. But at least that was at least a competently well-made film on a purely technical level.
No, I think MW is truly unique, an anomaly that will be studied in film courses at universities. It will long represent the absolute bottom of the barrel for high-medium budget superhero films: "Well, at least it's not Madame Web!".
I swear, in my opinion we are faced with a historic event.