I have never personally had a problem with the security staff at any visitor attraction in Paris. They have always been perfectly polite and professional, and the screening was generally far less intrusive and much quicker than the security theatre we see all too often elsewhere.
I just find it regrettable that the whole area around the base of the tower looks like a fortress these days. If they can move away from that feeling as part of this project, perhaps relocating essential access control measures underground as much as possible, that would be a pleasant improvement.