That rant seems entirely misaimed. The list makes it clear that Tim Curry was playing Dr. Frankenstein (i.e. the scientist), while you were playing the monster. There is one "(a.k.a. Frankenstein)", but that's just factually true: to the general public, the monster is known as Frankenstein.
Also, when discussing the monster, the character doesn't start and end with the novel. There's a whole world of film adaptations, cameos, parodies, references, etc. So a lot of what people think of as the character doesn't actually originate in the novel, and in a lot of cases, the monster is named Frankenstein. A lot of other things people know about the monster also aren't from the original, such as the metal bolts, the lumbering gait, the inarticulate speech, the involvement of an Igor, etc. If someone views the monster a certain way, it might be less about unfamiliarity with the original and more about familiarity with some other other version.
And no, the monster isn't named Adam. In the original novel, it's never named. It refers to itself that way, but only metaphorically ("I ought to be thy Adam"). Also, the monster does consider Dr. Frankenstein to be its father, and which means the monster's surname would also be Frankenstein.
(To be honest, I find using the term "monster" to refer to the character from the novel to be problematic, since there he really is a person. It's only from Dr. Frankenstein's point of view that he's dehumanized in this way.)