Criticism of Christianity may appear more socially acceptable due to its dominant role in Western history, while Islam can be more cautiously addressed, partly due to fear of backlash or accusations of Islamophobia.
The Rushdie example highlights the risks of critiquing Islam, as does the hesitation in addressing Islamic views on women's rights and LGBTQ+ issues.
The uneasy alliance between progressive values and Islamic perspectives might stem from a broader desire to promote multiculturalism and combat perceived Western imperialism, even if it involves contradictions.
I do understand the need for this to be questioned though. I think the 'another' elephant in the room is the promotion of Zionism and the notion that any critique is antisemitic. The support of Israel by the UK and US will play a huge part in this complex situation. It's worth noting that many Christians are afraid of speaking out against Israel.
https://www.newyorker.com/news/news-...zas-christians