anyone at all work with kundalini and there are absolutely no exceptions to the rule - everyone* responds to shaktipat

Kundalini work involves a lot advanced energetics and constant assidious devoted application of hardwork

Kundalini isn't a once awaken problem solved process - upcoming waves arent always as easy to deal with previous erruptions and bring their own set of problems

The Hallmark movement of serpentine movement upwards in the spine isn't the sole defining criteria of a Kundalini experience , variations are dime a dozen , not everyone who AP's gets the buzzing.

Kundalini itself isn't enlightment nor does it immediately land you in a pool of siddhi - there are many in between stages

Ultimately IMO it all comes down to hardwork , discipline , practice , determination and singular scrupulous applied focus - and trust me all that isn't easy to sustain.