the lower dudes are into hand signals and rings and things
the dudes higher up know more about how satan doesn't need physical objects
On the contrary. The very prideful spirit of satan requires that he is 'seen'. Remember, God hid his original name and it couldn't have sat too well with him. The snake doesn't like being invisible.
You underline this very point when you reference entire cities like Pennsylvania, NY and San Francisco. The monuments in these cities aren't just throwaway structures built by and to appease the lower degree dudes.
'hiding in plain sight ' is a fun saying, but only to the people that don't comprehend the Masonic symbolism of these structures. You yourself can apparently 'see' satan everywhere.
the first rule of masonry/satanism is you don't talk about masonry/satanism
Another fun saying. But the fact is that everyone talks about it, Masons and non Masons. Why is it safe to speak out loud about something so anti-God? Because as you stated, Masonry is a deeply spiritual concept and most people discard the spiritual aspect of our reality.