The "required login" pattern is particularly a problem. I seem to have namesakes around the US and UK that use my email address as their own when signing up for various services (mobile phone services, Shopify, Uber, various banks and investment firms, landscaper services, real estate services, home and car insurance, car repair shops, even Silver Daddies!!).

I can't open an issue (to ask the service to remove my email) without logging in to an account I don't have control over.

I don't want to use "forgot my password", because I don't want my IP address to be associated with a login to the account, because in some cases (particularly Shopify), the services were obviously used for fraud.