Bullying is not less widespread than it was before 2008. Anecdotally, I have two kids in high school and bullying is rife, it seems the environment in school is exactly as it was 30 years ago. This is the general consensus between myself, other parents and education/healthcare professionals that I’ve spoken to.

Well, here is some data I found that contradicts that, and supports my assertion, after doing a quick search:

In 2021–22, about 19 percent of students ages 12–18 reported being bullied during school, which was lower than the percentage who reported this in 2010–11 (28 percent).

The years don't line up absolutely perfectly, but 28% to 19% in a post-2008 ~10 year period is a 32% drop, if I did my math correctly.