Question: When to use extensions vs more services?

[nhynes]

According to my understanding, the following comparison is true of extensions and services used instead of extensions.

Feature	Extension	Service
Provides access to inner bindings	✅	✅
Loaded into	every isolate	own isolate
CPU overhead	very low	low
Memory overhead	O(num_workers), small constant factor	O(1), high constant factor
Binding isolation	high	very high
Typescript compatibility	okay	minimal
Ideal for	convenience, efficiency	separation, composability

Is this all fair to say? There's not much documentation for extensions or wrapped bindings, and they're not used very often, so I wasn't able to find answers elsewhere.