Polite or Rude is a subjective judgment of another’s behaviour.
When another’s behaviour is within my boundaries and it pleases me, they are judged to be polite.
When their behaviour crosses my boundaries and it displeases me, they are judged to be rude.
Politeness is deemed to be good behaviour.
Rudeness is deemed to be bad behaviour.
Behaviour is not inherently good or bad, although individually we can judge it to have a positive or a negative effect on ourself.
It is the perspective of a personal viewpoint that judges a behaviour to be rude or polite.
It is cultural standards, morals, ethics & principles that determine whether an action is polite or rude.
Different cultures, nationalities, religions, castes, & classes have different rules of etiquette that determine what is rude and what is polite, what is acceptable and what is not.
When I am unconditionally accepting of others and unconditionally allowing of their actions, I have no disapproval of their behaviour and I never judge others to be polite or rude.
I just observe who they are being with forgiveness.