They're using a Facebook product. The privacy damage already occurred.

WhatsApp is end-to-end encrypted, that's probably* better than using Telegram.

* Unless you want to go into a conspiracy theory that all the Meta employees can see the source code and nobody has ever felt like whistleblowing about the backdoor Meta put into WhatsApp, that is.

	▲	MYEUHD 41 minutes ago \| parent \| next [-]
		It is end-to-end encrypted, but aren't chat history backups stored in plain text on some server?
	▲	arshxyz an hour ago \| parent \| prev \| next [-]
		even if all meta employees see the source they cannot read messages as long as keys as generated on-device, which is verifiable
	▲	SXX 4 hours ago \| parent \| prev [-]
		WhatsApp obviously more encrypted than Telegram since later have no proper E2EE whatsorver by default and also sync all history from server. Its still preferable to use Signal since now it actually supports numberless registration. Hopefully they will actually fee payable not via credit card at some point.