I know that MVC has types for DB (models) and types for external requests (DTO). But the gap between them is so blurred that I regularly see business logic executed either on the frontend or on the base side. Worse, when there is chaos in the code in the form of reusing existing objects from both layers in some other channels, like WebSockets, GRPC, 3rd-party-API, etc.
What's more, I recently discovered that MVC IS A PATTERN in architectures, not the architecture itself. Which, maybe, puts everything in its place as to why many people misunderstand it and set themselves the landmines described above. But what do you think about it?