Nah the second movie was kind of awful in that it just threw that and other things out for no good reason. The original source book by Philip K Dick ("Do Androids Dream of Electric Sheep?") is explicit that they are androids.

In my opinion it was not a sequel in the proper sense but more something cribbing a recognizable name to sell movie tickets with vaguely related ideas, themes, setting, and Harrison Ford who will do any movie for lots of money as long as he doesn't have to put any effort in.

And they were kind of able to do this because Ridley Scott decided to not use the term android in the film adaptation because he wanted something different sounding and so chose the term replicant instead which doesn't have the clear connotations that android does but Ridley Scott did pretty clearly intend for them to be androids whereas the sequel threw that and the entire context and larger meaning of the work out in favor of whatever it was they were doing.