Saying please and thank you is not submissive. It is being polite and courteous. There is a difference. Everyone is not submissive, and unfortunately not everyone is polite or courteous either.
I once volunteered at my kid's kindergarten for some event or other, and during the day my kid asked somebody for something. I told her something along the lines of "Ask nicely by saying "please"" and then "You want to say thank you after the person gives you what you are asking for." One of mothers asked me "Why are you teaching your child to beg? I would never insist my kids do that"
We got into a long discussion about courtesy and politeness, which I ended up coughing up a dead relative to escape from since this woman was so hopelessly innured in her belief that basic courtesy equates to grovelling.
On a related note, her nose miner was one of the most obnoxious, boorish, bullying, angry, lacking in self control and self discipline twits it has ever been my sad misfortune to have in a (martial arts) class I taught.
As usual, I didnt say anything...
"There is a fine line between clever and stupid"
David St. Hubbins "This Is Spinal Tap"
"Every so often you let a word or phrase out and you want to catch it and bring it back. You cant do that, it is gone, gone forever." J. Danforth Quayle