A dolphin is a dolphin and a member of the whale family. But that’s not what you said. You said a dolphin is a whale, which is not true unless you’re okay with calling all members of the whale family whales, […]. Which you said you don’t.

It’s okay to just admit you’re wrong, you know?

You lost me here. OP never said dolphins aren’t dolphins. They also never said other non-dolphin members of the whale family wouldn’t be called whales. Where are you getting that from?