Like hell he invented that concept, or that it's remotely controversial.
There is a differenct between “novel” and “invented”. Consult your dictionary.
Yes and No.
Duesberg should be credited with "rediscovering" the 100 year old concept that had been abandoned by the mainstream medical community. So no, he is not the inventor.
But yes, I believe his ideas are controversial for two reasons: 1) The chromosomal theory goes against 60 or 70 years of cancer theory and is not accepted by a large percentage of cancer researchers and 2) Duesberg is persona non grata in the medical community for his (correct IMHO) views on the non-relationship between HIV and AIDS.
My view: Duesberg is probably correct about this. He was right about AIDS and he is a scientist in the old tradition - the evidence is in the data and politics be damned.