This reply seems a little bit pre-baked and somewhat irrelevant for the site in the link. The OP is building up a small world network of direct recommendations, i.e. it is about as far from an automated recommendation service as is possible. The warm introduction feature sounds like a simple path finding algorithm.

There may be another lens through which to view this instead of "balanced critique of technology". Describing this as "sick" seems somewhat hyperbolic.

More generally, is it really technology that makes us anonymous or is it simply an emergent property of scale? When there are millions of similar engineers out there (to use a single field as an example) relying on word of mouth, or similar non-technological approaches seems unlikely to find the best candidate with any degree of probability.