How long has Gmail become paranoid?

Today, to activate the code for AdWords, I went to create another mailbox.
After filling out all the necessary forms, I was transferred to the information confirmation page, where I was asked to confirm the rights to this mailbox using my mobile phone.

Verify your account
Almost all! Now to create your account, we only need to confirm it.

Account verification is useful in the following cases:
Spam prevention: we try to make sure that accounts are created by people, not robots.
Restoring access to your account: if you lose access to your account, the information provided will be used to confirm your identity.
Communication: The information you provide will be used to notify you of important changes related to your account (for example, changing passwords on a new address).
We cannot sell or disclose information about your telephone number to other companies without obtaining prior permission from you. In addition, we will use it only at this stage of verification, to recover the password and if there are any problems with the account security. In other words, you should not worry about unwanted calls or text messages coming to your number.

Confirmation options:
')
1) Text message.
A text message with a verification code will be sent to your mobile phone from Google.
2) Voice call.
Your phone will receive a voice call from Google, and the answering machine will inform you of the confirmation code.

Should I provide Google my mobile phone?
Is this mandatory clause a violation and disclosure of my personal information?
Will I get spammed from them, etc.?
You can certainly buy an additional SIM card, so as not to shine your main phone, but these are already nuances.
I never liked to leave my phone anywhere.