> Even when I have full line of sight to all of the sky, it cuts out with some frequency (multiple times per hour) for anywhere from a couple seconds to half a minute.
This would be incorrect. If it has proper line of sight this does not occur. You're experiencing some other problem that most people do not experience.
> Starlink is fantastic in some ways, but I think they've massively oversold it, and I'm not sure they'll ever catch up as they're recruiting people faster than they're adding satellites.
This isn't a problem over the ocean as there's no one out there. It will be extremely high speeds in such places.
> I worry that this push to sell to more-lucrative customers at sea is just going to make the service even worse for nobodies like me.
It can't make service worse on land because the systems are disjoint. Speeds in one cell do not affect speeds in another cell.