Is there a limit on the number of Proficiency Swaps as part of Customizing Your Origin in Tasha’s?

Tasha’s has a section on replacing proficiencies granted by race in the section on customizing your origin and provides the example of swapping elven proficiency with a longbow for a tool proficiency. Does that mean you could swap all 4 weapon proficiencies from Elven Weapon Training for any 4 weapons or 4 tool proficiencies instead?