Indeed, it is a common word in the subject areas you mentioned. Strange they didn't have an inflammatory or hostile reply when given a legitimate example of correct usage of language.
> macOS still has a completely retarded implementation of DisplayPort MST
> completely retarded
It's extremely frustrating how many people in this community chose to defend this comment as if it were an eloquent description of the issue.
Calling attention to problematic language is not hostile or inflammatory. This term is flagged as offensive in the dictionary in this context. Don't shoot the messenger.
It's silly that the OP wishes to turn a conversation into computer monitors into a conversation about bad or good words.