I guess so. Although I can't see any great security benefit in preventing a user from accessing the memory of their own process. That said accessing that memory is a bit of an odd thing to do and isn't something you'd tend to do on a production server for example.

You might find that you can't run strace -p $PID or gdb $PID either. If that's the case then I suppose it's intentional.

Welcome to the world of DRM :) At least in this case you can probably turn it off.