Not necessarily. Sadly, many companies advertise that they have safe and secure sites, and that part may be true. However, many companies will sell, trade or even GIVE info away, especially to other businesses that they are in cahoots with. Like, "Because you like "us" or "our products", we gave your information to this other company as you may like them or their products as well" It's sneaky, dirty, underhanded, flat-out-WRONG and, sadly, true.
Very true, but there is still another possibility.
I'm a skiptracer ... that means I find deadbeats for my employer who have taken our merchandise and run off without paying.
Let's just say you had a "yahoo" email account back in, oh, 2013 when they were hacked. So, Joe Hacker grabs a bunch of email addresses off Yahoo's server. Most of those come with your real name, a second email that you gave Yahoo in order to "make your account more secure". You also likely gave them a phone number because they assured you they would use it to keep your account more secure (hmmmm.... does adding links to a chain makes it stronger?).
Well, I can run your name through certain databases and likely get your email address, your age (sometimes your DOB), your physical address, and much more.
I can take the phone number associated with your account and find our even more about you.
As a spammer, Joe Hacker can use all of this information to create an email that seems to be directed at you (because it is) but isn't really from Amazon/PayPal/Ebay/Mastercard/General Jumufu from Nigeria. The email will (if well done) fool most folks with links that seem to bring you to the legitimate site.
It is infinitely safer to create a single encrypted file on your computer using a secure password that's easy for you to remember than it is to have all of these "security measures" from an email provider or anyone else.
A chain is only as strong as its weakest link. Why would you want to add more and more links?
Keep everything safe locally, even if you have to write it down in a notebook. In that case, use a simple cipher because most kids can't even read cursive anymore let alone figure a cipher.
Below is an example of the intelligence level of most of the HS grads I've met lately. What cipher could he break?