C# has structs with generics/explicit layout/object references/fixed buffers/etc. and byrefs which are special pointers that can point to managed memory, stack or unmanaged one yet are still tracked by GC despite allowing pointer arithmetic on them, and regular C pointers yet successfully uses GC.

Much damage has been dealt to non-JVM languages by stereotypes and perception that the way JVM languages work is the way all GC languages work.