It's almost always a weasel word because if you meant customer you would just say customer. Saying "stakeholder" permits a level of ambiguity about whose interests are being represented.
Again, you're thinking of an "agile" stakeholder- not a "stakeholder capitalism" stakeholder.
Why is this so difficult for you to grasp?
Because I personally haven't come across writings or speakings AFAICR in which "stakeholder" is used as a weasel word.
I will avoid the word now that I've had this conversation.