...and some people who deny basic reasoning. The commenter you describe is racist is discussing religious law, not legal law of Israel. Just like a Muslim can't marry a non-Muslim under the laws of Islam, and certain Christians (such as Catholics) won't marry non-Christians - these are religious marriages, not civil ones. So it can be a religious issue if someone claims to be Jewish, is viewed legally as Jewish, but under Jewish religious law is in fact not Jewish. In what way would that justify calling Israel racist?
U.S.-led coalition conducts 13 airstrikes against ISIS targets in Syria, Iraq (Reuters)
from the article: Conversions bill sets Netanyahu on collision course with U.S. Jews