consent mode for advertising purposes и Special feature 2

[Game Games]

Admob SDK support, please answer my questions with the same numbering as the questions.

Here are my questions:
1) Is it mandatory to enable consent mode for advertising purposes?

1.1) If I don't enable "Enable consent mode for advertising purposes" (File 1), then as it says here ("Enable consent mode allowing other Google products you deploy on your sites and apps (such as Google Ads and Google Analytics) to interpret your existing EEA, UK, and Swiss user consent signals for advertising purposes, including for ad storage, ad personalization, and ad user data consent signals.") it won't work and the data won't be used?

2) Is it mandatory to enable "Enable consent mode for analytics purposes"?

2.1) It says here "When enabled, you are choosing to interpret the TCF Purpose 1 signal as the consent signal for analytics storage." (File 2). If I don't enable "Enable consent mode for analytics purposes," then analytics storage won't work?

3) Is "Special feature 2" mandatory to enable?

3.1) It says here (file 3) that Special Feature 2 enables vendors to actively scan user device characteristics for identification. If I don't enable Special Feature 2, then ad providers won't be able to scan user device characteristics for identification, correct?