Daisy Ridley herself has come out and stated that she believes the ‘Mary Sue’ tag is sexist and inappropriate.
http://comicbook.com/starwars/2017/12/21/star-wars-the-last-jedi-daisy-ridley-mary-sue-rey/
The odd thing is she doesn’t seem to know what Mary Sue means and she is wrong about there being a male equivalent.
An actors opinion of their character and the reviews they get is hardly the end all be all. From the article you quote is says
“The term refers to a character that has no flaws and can seemingly accomplish anything without any trouble”
Not sure what the issue is then???
From Wiki: The term “Mary Sue” comes from the name of a character created by Paula Smith in 1973 for her parody story “A Trekkie’s Tale” published in her fanzine Menagerie #2. The story starred Lieutenant Mary Sue (“the youngest Lieutenant in the fleet — only fifteen and a half years old”), and satirized unrealistic characters in Star Trek fan fiction.
The coining of the term sounds like a testament to Paula Smith.
Bringing politics into discussions of Star Wars is generally a bad idea.