Earlier quoted context omitted.
A blood sample? The only fields they ask for that might be too much for someone is a phone number and prior email, and neither is required to make an account. I take my privacy very seriously and understand a lot of the apprehension about Google's tracking, but I think you are being a little ridiculous.
You "can" sign up for gmail without a phone number (iirc it's fairly difficult, and you need to do something like use a fresh install of an android device or something to trigger the right sequence of dialogues). However if you try to use that account outside of the device, they will soon (within a couple of logins) ask you for a phone number for "security purposes," - the dialogue says something like "there is somet…
The number of times people forget their password, or accidentally type it into a phishing site, or re-use passwords across different websites where one of them (e.g. Yahoo) get breached....
Without a recovery phone number, these people are hosed - and they've lost data, photos, contacts, email, their entire digital life etc. That's a pretty poor user experience. So most people are like - yeah, OK, that sounds reasonable, let me put a phone number I can access just in case somebody hacks my account.
NB: I work for Google, but I don't speak for them here in any official capacity.