BillyBatson4360 wrote:
Because the Spider-Man movies carried a credit for Steve Ditko (who has never sued Marvel and has been very vocal about not suing Marvel).
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Ditko has "been very vocal about not suing Marvel"? Where has he said one word on the record about whether he would or would not sue Marvel?  He hasn't sued Marvel (but I think the copyright termination window for his major creations isn't even open yet, or if it is open will stay open for a good while yet), but not suing isn't the same as being "very vocal" about not doing so.

Because every Marvel movie since the first X-Men has carried accurate creator credits.
Well, maybe if you find weak "based on the comics by..." or "special thanks to..." type credits accurate.  I think an accurate credit would be "Fantastic Four created by Jack Kirby and ...", which I haven't seen (but I haven't watched most of them).  I also seem to recall there was some hubbub about the second Hulk movie and the Wolverine movie and others not including even those weak credits.