In reply to Otto.

And out of interest, if plugins in the wordpress.org directory add “- Suppresses JetPack promotions” as one of their advertised plugin features, and add `add_filter(‘jetpack_show_promotions’, ‘__return_false’);` into their code, how is that?

Seems to me that if it’s valid for JetPack to decide that users want these by default, then it’s valid for other plugin authors to take the mirror opinion that they don’t. And as long as it’s clearly mentioned in the plugin description, no problem, yes?