I think that if you had a college football player do something equivalent to that tea drinking thing after a score the team would be flagged for unsportsmanlike conduct and they should be.
Also, I do think there is a problem with rampant unsportsmanlike conduct in sports.
Perhaps college... sure
But pro football and baseball and basketball are over the top celebrations
Football players grabbing their balls and having 3 minute long dance parties in the end zone
and what do we do... ESPN has a weekly televised scorecard grading the best celebrations
we congratulate MEN on their celebrations
Yeah John, she sipped tea...
fact = we expect women to act differently
The thing here is the pointed reference to the opponent.
This would be like an FSU opponent doing the chop to the FSU crowd after scoring or a Texas opponent giving the "horns down" hand signal to the Texas crowd after scoring.
It just comes down to whether it is against the rules or not. (clearly the horns down is a penalty when done on the field. See WVU game).
It was not a penalty in the World Cup.
So it comes down to whether you like taunting or not, and how far is too far. Pulling a white flag out against France or a swastika against Germany would be taunting too. Would that be acceptable?