gaon, you obvously don’t know what you are talking about.
you quoted article that says reason for tonsure is to show devotion. I answered so what, the same thing can be said about karbanos. so now you tayne cutting hair isn’t kein shvirah.
what shaychus? if that is true than it makes no difference what they think since it won’t be tikrovos mimah nafshach, so why did you bother bringing the article???
eleh mai you are saying a new tayne. ok
you were trying to say that cutting hair isn’t כעין זביחה. that is a tayna that not rav elyashiv and not rav belsky made, and for a good reason, because it is tzarich iyun gadol.
there is absolutely no tnai that it has to involve shvirah. the meiri and rabeinu chananal writes any maaseh chituch is included. this vadai includes hair. the rashba also writes that lisha of bread is kein shvira.
this tayne was answered very clearly in many other teshuvos.