/u/FlyNumber/summary
/u/FlyNumber/activity
/u/FlyNumber/activity/topics
/u/FlyNumber/activity/replies
/u/FlyNumber/activity/likes-given
/u/FlyNumber/badges
I’d like to also point out that removing the canonicals altogether for those urls would be a step in the right direction. (IMHO my method is better for SEO)
As stated above, it’s set to noindex so not sure why Discourse generates the canonical at all.