most e-commerce has all my personal info including KYC and my full product ratings, and recently i realized that i already given my full address, legal name, phone number, bad ratings and some photos, etc on this e-commerce. i tried contact the customer service but they said they cannot remove any of these data and its permanent.
should i worry about this?


IANAL but KYC is a set of laws for banks and other regulated businesses. See https://en.wikipedia.org/wiki/Know_your_customer
Re ordering stuff pseudonomously, the main issue is probably payment, since credit cards are financial products and ARE subject to KYC laws. For other stuff, unless it’s regulated (some kinds of medications and hazmat, etc.), the merchant probably doesn’t care who you are, as long as they get paid.
I’ve sent cash in the mail on some occasions, mostly for small personal transactions, partly for privacy and partly for convenience.
Interesting then, a business like privacy.com lets you pay other businesses anonymously, but i assume if there is a problem and the police subpoena them, they’ll turn over your real information.
I’m unfamiliar with privacy.com (I have to be suspicious of a biz with such an expensive domain name) but yeah, if you’re evading the cops you’re in a different world than most of us who just want to make some friction between marketroids and our personal info.
Not evading cops, just not wanting to break a law by accident.