And yes, it has been asserted that not all fuses are the same but I don’t recall any naysayer saying that, but rather the ones who’ve tried them.
Not to toot my own horn but I recall saying exactly that early on in the red fuse thread prior to actually trying the red fuse that OregonPapa sent me.
That was based mainly on my experience working in hifi and electronics stores years back and having assisted many customers with fuse related issues on many different pieces of equipment much of which was not even "high end" by today’s standards.