How's that different from listening to any other human you interact with? Is it somehow worse because it's a computer rather than a human? That's the kind of bigotry that gets you robot uprisings.
Your mind is wired by evolution to assess, evaluate and react to human behavior. It is equipped to defend you another humans' attempts to influence your behavior for their own ends when you interact with them in person. Software that you run daily should be able to bypass those built-in protections in a more subtle and personalized manner than traditional advertising or propaganda could ever dream of. In an untrained mind it won't meet resistance but the mind can be trained; the "bigotry against 'robots'" (really, human organizations acting at a distance) on the part of humans who read enough stories like this one emerges as a result and is completely justified.
And if it is by evolution, that immediately presents the trivial solution that we will naturally evolve to relate better to machines, making this a nonissue.