William Burkitt on Revelation 2:6

As if Christ had said, "Though thou art not what thou shouldest be, yet this thou hast commendable in thee, that thou shouldest be, yet this thou hast commendable in thee, that thou hatest the deeds of the Nicolaitans, (who held community of wives, and ate things offered to idols,) which impure sect I also hate for their licentious doctrine and lewd practices, which tend to the ruin and bane of human societies."

Note here, 1. That it is not unlawful to call heretics by the name of their leaders; the Nicolaitans are here so called from one Nicolas, supposed to be the deacon mentioned, who having a beautiful wife exposed her as common, to avoid the imputation of jealousy.

Note, 2. That Christ hated all licentious doctrines and loose practices, and so should we.