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Researchers jailbreak a Tesla to get free in-car feature upgrades
(techcrunch.com)
This is a most excellent place for technology news and articles.
Just because a slur appears with a definition in a dictionary, does not make it acceptable. And maybe it was acceptable at one time, but things change.
"Retard/-ed/-ant" has many formal applications, and should not be considered a slur when used properly; unlike other slurs that only exist these days for hate.
For example, Airbus airplanes inform pilots during every landing of what they should be doing. Some may argue it reminds the pilots what they are, should they fail to do so.