I’m not sure I’d say anything is a “fatal mistake” if it works, and this appears to? Feels like you’re coming at this from “it’s suboptimal”, calling it a fatal mistake is a bit much?
I would look at it this way:
Firstly, it’s just a demonstration of how far a technology can scale, not an endorsement of technical approach for the customers.
Secondly, on serverless, PlanetScale is just solving things their customers want? They don’t have a business if they don’t do that.
Finally, even if you are “right” or at least making a valid point, isn’t the “rethink this entire problem” take principled more than practical? There’s always 47 things to do and time only exists to do a few.
I would look at it this way: Firstly, it’s just a demonstration of how far a technology can scale, not an endorsement of technical approach for the customers.
Secondly, on serverless, PlanetScale is just solving things their customers want? They don’t have a business if they don’t do that.
Finally, even if you are “right” or at least making a valid point, isn’t the “rethink this entire problem” take principled more than practical? There’s always 47 things to do and time only exists to do a few.