Does it conform Occam's razor rule to have something that can be easily done very similar way without changing language?

Having some limited experience with lazy imports, yes, but this eliminates a lot of gross boilerplate. It also has the effect of "blessing" the practice of lazy imports which can have a cultural impact; it also prevents a situation wherein multiple subtly incompatible approaches to lazy imports become individually popular.

Not sure that's Occam's razor any more.

Regardless lazy loading needs widespread use to be most effective so having a unified syntax and no extra dependencies makes a lot of sense.