I didn't work there for 3 years (1 year), and I'm not publishing a study.

Should people who post anti social media sentiment disclose that they've never worked on it, have never run experiments on well being, and have never looked at the data?

My bad, I did the math wrong, 2019-2021 is indeed about 1-2 years.

Disclosures are necessary only when something happened, not when something didn't happened.