Kinda, but if something can be built as an extension, it probably should be. It proves what you can do with the APIs, proves it can be replaced / forked by othe

Kinda, but if something can be built as an extension, it probably should be. It proves what you can do with the APIs, proves it can be replaced / forked by other people, and ensures a consistent level of isolation by default. And if it can't... often it's worth asking if it should be possible.