If KYC, then privacy gets compromised
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For sure not KYC, but the level of anonymity depends on the users, this who want to stay anonymous will pay in cash or Bitcoin, those that don't care will pay with credit card or PayPal
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Being non custodial the answer is no. More over, if you didnt pay your Proton account with credit card you are even more private.
Proton accepts payment in Bitcoin and Cash. If you are a person using Proton and you care about privacy you never paid with Credit Card or PayPal...
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