WCAG 2.0 - 2.4.1 Bypass Blocks

Good morning!

 

Sufficient Techniques for 2.4.1 - Bypass Blocks states the following:

 

2. Grouping blocks of repeated material in a way that can be skipped, using
one of the following techniques:

 

Year 2012

http://www.w3.org/TR/2012/NOTE-WCAG20-TECHS-20120103/H50

 

Year 2008

http://www.w3.org/TR/2008/NOTE-WCAG20-TECHS-20081211/H50.html

 

It's very unclear why 2.4.1 now only suggests using map element to group
links. Does that mean web developers should start using only map element for
main navigation? 

Its not clear when and why to use map element (instead of ul for example).
Should ul and ol used only when its more like a list and not a navigation
item?

 

Thank you

Kristjan Kure