This info here is about 2 years ago , is it possible to do such now ?

I's even worse now, with the rise of multiple factor authentication.
Even if you are able to guess the password of the email account, you will then need to find the PIN code sent by Text and/or displayed on Google Auth / Authy apps.

Do u know or think there is any way to redirect the Auth OTP to another number or email apart from the one(s) registered as d e-mail recovery method !?

The best-known method is Smishing, which is causing a lot of casualties in the USA.

If this smishing can help me then I would do it cuz I really need to open my other mail

lol This is hard to explain to a bunch of people, they think that breaking passwords are so easy...