I like the solution's developer experience. When you deploy changes to the database in the portal, you can use different deployment strategies and see how things work. You can put changes into different branches, like deployment and staging. This is built into the product, allowing you to navigate changes through different branches.
The solution is beginner-friendly. Like any new platform, it can be a bit confusing at first. But after spending about an hour with it, you can get a clear idea of what everything is for. It's not very confusing; I think they've improved it recently.
I used PlanetScale for hobby projects, so my perspective differs from someone using it commercially. Unfortunately, they've removed the free tier in recent months and pivoted to a business-to-business model. This is sad for hobby developers like me because it's a great product, but I understand they have costs to cover.
When I tried to integrate the solution with Firebase for authentication, I faced some interruptions. Also, when using it with Next.js and NextAuth.js for Google and social logins, I had some troubles.