Controversial opinions and fearmongering = clicks, views, impressions, and ad revenue.
Training, competing, hunting, playing video games, doing or not doing any of the above... none of it transforms an instance of legal self-defense into an illegal one. For every notable borderline case impacted by local prosecutorial politics (think of a Harold Fish), how many other DGUs (from brandishing through discharge) occur without prosecution? The annual estimate from CDC's now-old study was 300,000 to over a million... going to the range or taking a class is not a poison pill.