I dont think anyone is ignoring it, its a Heated topic and actually quite an issue in South African politics now (https://english.alaraby.co.uk/news/protests-greet-miss-south...) Wikipedia has a page where the general issues are enumerated https://en.wikipedia.org/wiki/Israel_and_the_apartheid_analo....
Historically scrutiny originally fueled because Israel is seen as a supporter of the apartheid system even after all other western countries had withdrawn support https://www.haaretz.com/opinion/.premium-why-israel-supporte...