I broadly side with Scorsese on this debate, but think he needs to get more informed on the films themselves.
I think it is a damning sign that modern television and film focuses so much on the recycling of established brands: Lego, Duplo, Marvel, DC, Robin Hood, King Arthur, Terminator, etc. We're seemingly trapped in an endless spiral of big-budget reboots/revamps/reimagining of established brands instead of taking risks on original ideas that could be franchises. But, the issue isn't really Disney. Yes, Disney is the face of this issue courtesy of the MCU, but this is really the issue of competing studios.
The dominance of the MCU has led to this environment, but really, isn't this because so many studios are desperate to chase the dragon of cinematic universes instead of trying to do their own thing? Marvel isn't the issue here, its shrewd cynical studios that think just because you slap a recognizable IP to your mediocrity you'll gross a billion dollars.