I guess you don’t consider !bicycle_touring fit for the sidebar then.
Bicycle touring is relevant but indeed lemmy.world is antithetical to fedi philosophy and purpose so I wouldn’t want to promote it on the sidebar. #LemmyWorld has a group for everything and needs no promotion. They replicate communities in the free world, effectively poaching from better places.
Would you be opposed if some content from over there would also be crossposted to here?
No; feel free to crosspost either way.
My personal approach is to post initially in the most relevant free world decentralized community first, creating a new community if necessary. If the post contains a question that’s starving for answers after some time, then I might cross post to centralized places¹ in part to promote the better venue to those in places of oppression… to try to steer people toward a more ethical workflow.
Some instances only show the parent of a cross post, while other instances show both parents and children in a cross posting scenario. This is why I favor the digital rights respecting community for the initial post.
① e.g. lemmy world, sh.itjust·works, lemm·ee, lemmy·ca, programming·dev, and lemmy.ml.