Is this how you avoid CRS?

Banks require you to update your information every year and often supply documents.

Also, Bitcoin solves all of this.
 
What will happen when they ask you for your residence and want proof or residence documentation?

An easier way, get residency in a 0% tax country, open bank accounts and show the residency of that country. CRS reporting goes to the 0% tax country, which doesn't matter. Case closed.
Which are such countries that work as of 2021?