Fostering wide adoption of Cryptonote-based coins (including Monero) in order to transform the coins' networks in gigantic botnets?
No this theory is retarded. I have some monero nodes running on my own systems and they are not part of any gigantic botnet.
Moreover, there is relatively little of the original cryptonote code left anyway. Huge portions have been reviewed, rewritten, reworked or replaced and that will continue. Any plan to use Monero to distribute malware would have been long since subverted.