[tilsammans]

It's solid advice for sure, but I've been doing the opposite in recent years. Sign up for everything, confirm accounts, setup MFA if possible, and consistently use the account. Then, when I want to terminate the relationship, request permanent account deletion. (I'm in EU, so GDPR applies)

This way I can be reasonably sure they've tied all my activity to my singular account. Instead of my shipping address, IP etc being all over the place. When they don't have a delete account button, I request it via email. Seems to work fine. Obviously can't be sure it's actually gone, but that's okay. Ever since Adobe leaked my PII, it's out there anyway.