You better look up the definitions for stealing since you don’t seem to recognize this is one of them:
“dishonestly pass off (another person’s ideas) as one’s own.”
definition taken from the web.
Live by the web die by the web. Did they mention the penalty for this theft?
Did they say if I tell you my parents taught me to respect others, that is an “idea” I stole from someone?
Did they say a phrase in a public speech is an idea which cannot be repeated?
You cannot make up crime where one does not exist.
The whole issue is silly.