The issue is not that Noa-Lynn is playing there - there are a lot of tournaments that are open and therefore available to both sexes.
The issue is that Noa-Lynn qualified through the female tour and therefore took the place of the third place woman.
If they had qualified through any other means then it wouldn't be an issue, they've also qualified for the Worlds of which there are numerous ways to qualify depending whether you have a tour card or where you live but there is only for females and this is the one they chose, again taking the place of a woman.
Noa has played and won on other mixed tours such as the challenge which is to develop players, had a decent showing in the Modius which is for non tour card holders. There are lots of avenues that are open to both men and women and therefore they shouldn't be anywhere near female only events .