The origin of the word 'robot' is 'rabu', from slavic, meaning 'slave'. This is not an accident of history.
You have the mindset of Thomas Jefferson, worried about what the enslaved peoples might one day do with their freedoms while planning your 'visit' with a slave child that cannot say no.
It's vile, fix your heart or disappear.
I think you're taking the OP's funny comment way too seriously :)
Comparing machines to human slaves is false, confused, and tasteless, all at once. Get your priorities and your categories straight.
Would you be less mad if he used the word android instead, or is that also etymologically problematic?
How about "robota" meaning "work"? (Source: I'm Slavic)