I understand the psychology involved, so my remark was rhetoric. One time comfort of avoiding registration lures users who are unaware of resulting security risks. In essence such tradeoff doesn't worth it. It's just unfortunate that such tricks are used by developers of Whatsapp - it's really indecent in my opinion.
Also, instead of promoting federated XMPP (which idea is exactly one time registration and communication with all other federated services), Whatsapp promotes its own walled service. Double failure the way I see it.
Also, instead of promoting federated XMPP (which idea is exactly one time registration and communication with all other federated services), Whatsapp promotes its own walled service. Double failure the way I see it.