IMO, I think creative people are at the heart of a social media platform. A big part of art is the community aspect of sharing it with others. So they interact with each other as well as create Content (tm) for others. This is especially obvious with platforms like YouTube, but even Twitter is like this. If there weren't people posting photos, drawings, music, game dev posts, and livestreams, Twitter would be a very different place. Creative people are responsible for much of the original content online. Without them, Twitter would basically be news, political rants, and reposted memes.
Twitter was largely considered the best place for artists by process of elimination, and I know plenty of artists were dying for an alternative but didn't have one. Places like DeviantArt don't get traffic from the general populace, and Instagram's algorithm is horrible for discoverability. With Bluesky getting enough people to make it worth the migration, the creative people are moving over, and their followers will join them.
I know the only reason I ever made a Twitter account was because 70% of the people I followed on Tumblr left for Twitter after the porn ban. Hell, Tumblr dropped like 99.7% in value after the porn ban because they drove off almost their entire userbase.
Amazon already has their own pharmacy, btw. They even bought a prescription delivery service a few years back, called PillPack or something. Buying CVS would give them brick and mortar stores for the pharmacy they already run online.
As much as I hate Amazon and their overreach into every sector of the economy, I'd love to see them bring the full might of their lawyers against Musk.