Having a browse of the updated /plugins page on a hosted site, it felt like the ‘Preinstalled’ label/link is a little misplaced in that particular scenario.
Conceptually, all plugins on a hosted plan are ‘Preinstalled’. They come with the plan and there’s no scope to add or remove any of them without upgrading/downgrading (barring Enterprise). I was thinking it may be better to suppress that label on hosted sites as it seems more relevant to self-hosters? Or perhaps have another info label instead (eg. The plan which the plugin is attached to)
Secondly, the ‘Preinstalled’ label is currently a link to the Bundling more popular plugins with Discourse core meta topic, which is not hugely relevant to hosted customers and even maybe a little confusing.
Thirdly, even the older bundled plugins (like Discobot) have the ‘Preinstalled’ label link, and that meta topic doesn’t really concern them.
I’m looking at a hosted site updated last Friday, so I maybe too late to the party and you’ve already got this covered, but I thought I’d raise it. 
