Unless Ehrman changes the meaning of Forged within the book, he is not in line with other scholars.
From my understanding, every writer in almost every ancient genre used someone else's name to give his book more status. I would think most people would now it was not written by the stated author. Forged is over the top but the title will sell well.
Obviously you did NOT watch the video (above) or you would know these points of yours are CLEARLY repudiated.
Scholars are AFRAID to use a word like "Forged". Instead, they use a juicy technical term instead (knowing few people will look it up.).
[ soo-d uh - pig -r uh -f uh ] noun ( used with a plural verb ) Origin:
1685–95; < Neo-Latin < Greek, neuter plural of pseudepíigraphos falsely inscribed, bearing a false title.
Pseudepigrapha are falsely attributed works, texts whose claimed authorship is unfounded; a work, simply, "whose real author attributed it to a figure of the past."  The word "pseudepigrapha" (from the Greek: ψευδ?ς , pseudes, "false" and ?πιγραφ? , epigraphe, "inscription"; see the related epigraphy) is the plural of "pseudepigraphon" (sometimes Latinized as "pseudepigraphum"); the Anglicized forms "pseudepigraph" and "pseudepigraphs" are also used.
Few scholars would insist today that the Second Epistle of Peter was written by Saint Peter.  Nevertheless, in some cases, especially for books belonging to a religious canon, the question of whether a text is pseudepigraphical or not elicits sensations of loyalty and can become a matter of heavy dispute. The authenticity or value of the work itself, which is a separate question for experienced readers, often becomes sentimentally entangled in the association. Though the inherent value of the text may not be called into question, the weight of a revered or even an apostolic author lends authority to a text.
Some biblical scholars assert that in antiquity pseudepigraphy was "an accepted and honored custom practiced by students/admirers of a revered figure"  , but provide no evidence to back up this statement... wikipedia