Why is he extreme? What's makes him extreme? He not conforming to your liberal modernist views makes him extreme? Or is it a case of simple intolerant bigotry on your part?
Islam encourages couples to have as many kids as possible because this is the command issued by the Prophet (peace and blessings of Allaah be upon him) when he said, “
Marry the one who is loving and fertile, for I will be proud of your great numbers.”
Without compelling medical reasons , birth control methods should NOT be used according to scholars. Also using birth control due materialistic motives is totally prohibited. Sustenance comes from Allah (swt) alone.
Numbers give strength. Imagine muslims outnumbering non-muslims in europe. Non-muslims already have a falling brith rate due to their twisted social norms but muslims have a healthy brith rate. Europeans are already cringing in fear of muslim population boom. Look at the demographic balance of Israel and palestine. Israel is dead worried about the huge palestanian population and a possible 1 state solution. A lot of strength lies with numbers. The chinese are now whining about the disastrous effect of one-child policy while the japanese have completely lost it.
Btw bith control pills have serious harmful effects.
https://islamqa.info/en/21169
https://islamqa.info/en/21169
http://www.islamweb.net/emainpage/index.php?page=showfatwa&Option=FatwaId&Id=325126
Why didn't you expect this from him? Do muslims have to to conform to certain certain abstract exceptions defined by the west?