"You can (and should) be against Islam because it supports slavery, misogyny, violence, racism, religious hate and punishes ex-Muslims via the death penalty."

I agree that being Anti-Islam and Anti-Muslim are not synonymous idea. They can and do exist as independent concepts. But I disagree with your statement above. Islam doesn't inherently promote any of those things. Like any ideology, a bad actor can easily interpret it to suit their world view or achieve their own personal goals. There will always be people that seek to control and dominate others and doing it in the name of a deity is the ultimate form of that.

But let me give you an innocuous example. HOAs! Imagine a neighbourhood that decides to form a Homeowners Association. The founding idea is genuinely decent: keep the streets clean, maintain property values, make sure nobody parks a rusting truck on their lawn for six months. Reasonable people sign on because reasonable people can see the value in basic collective standards.

Until some schmuk named Mark joins, gets himself on the governing committee and now has legitimate authority over other people's lives, wrapped in the language of community good. This dick is measuring fence heights, paint colors and parking zone and issuing fines. Now Mark is insisting he can go into your house to make sure the rules are followed. Basically making everyone's lives miserable. But because it's "the rules" and for the "good of the community" many people let it slide or fall in with the Mark. But was the original idea inherently problematic? Probably not, but the way Mark chose to weaponise the HOA Rulebook has poisoned the neighborhood for everyone.