Not at all.
Russell GP3 and GP2 champion. He's proved it all through the junior rankings and done a great job at Williams. Let's not forget he more than matched Bottas in 1 weekend with Mercedes, a very impressive feat.
Norris, world karting champion and pushed Russell very close in their GP2 season together. Out driving a well established driver in Ricciardo, and shown his ability in qualifying and wet weather sessions (Belgium,Russia) which many believe equalises the cars and shows a drivers ability to control the car. Senna, Schumacher, Hamilton and Verstappen have all shown great wet weather ability to go with it.
People that dont rate Norris and think think he's just a british twitch streamer are very much mistaken.
Are they popular because they're british? sure, but they got here because they're class drivers, not because of popularity.