Muslims either don’t believe what they say they do or believe only a part of it or they believe all of it.
If they don’t believe, they are liars.
If they believe a part of it, the bad part, they are insane.
If they believe a part of it, the good part, they are stupid and/or cowards because they don’t separate from Islam and call themselves by a different name.
If they believe all of it, they are insane.