Yes, calling someone "you're a demon" can be considered disrespectful, offensive, and hurtful. It is not a kind or constructive way to address someone, and it might deeply offend or upset the person being targeted.
Referring to someone as a "demon" implies that they are evil, malevolent, or malicious, which is an extreme and negative judgment to make about another person. It can be hurtful and damaging to their self-esteem and can lead to conflicts and strained relationships.
It's essential to treat others with respect and kindness, even when disagreements or conflicts arise. Instead of resorting to insults or hurtful remarks, try to communicate openly and constructively about the issues at hand. Address your concerns or conflicts in a calm and respectful manner to foster understanding and resolution.
Using hurtful language can lead to further escalation of problems and can harm both the person being targeted and your own reputation. It's best to choose words that promote empathy, understanding, and peaceful resolution in all interactions with others.