No, it is completely unethical. Spying on someone in such a private moment is a serious invasion of privacy. It violates basic respect for others and can cause great harm to the person being spied on, especially in a family relationship like between a son and his mom.
No, it's completely unethical. Spying on anyone in a changing room violates their privacy. A changing room is a private space where people expect to be able to change in peace and without being watched. Even if it's a family member, this behavior is unacceptable.
No way. This is an unacceptable behavior. Think about how you would feel if someone spied on you during your private time. Your mother should feel safe and secure in her own home, and spying on her in the shower is a huge breach of that trust and respect.
Definitely not. Privacy is a fundamental right, and your mother has the right to privacy while she is in the shower. It's not only unethical but can also cause a great deal of harm to your relationship with her.