I like Piefed, it's my daily driver, but cancelling Lemmy is probably too much.
The majority of people still haven't moved from !privacy@lemmy.ml (!privacy@lemmy.dbzer0.com ) or !linux@lemmy.ml (!linux@programming.dev ), so trying to get them to switch platform based on "cancelling" isn't productive.
If you want to advocate for your platform, explain what features Piefed has compared to Lemmy (https://join.piefed.social/features/) instead.