Thompson: Populism isn't really politicians representing the views of the majority, though, Nigel Parsons; populism is a manipulative strategy to use the worst - the hatred of those who see themselves as oppressed - to bully a whole society.

You are entitled to use your own definitions. I prefer the following:
Britannica: Populism, political program or movement that champions, or claims to champion, the common person, usually by favourable contrast with a real or perceived elite or establishment.

Cambridge dictionary: political ideas and activities that are intended to get the support of ordinary people by giving them what they want: