Is there any way for the Draconic Bloodline Sorcerer’s Elemental Affinity to improve Eldritch Blast, or is the Sage Advice Compendium just wrong?

The Draconic Bloodline Sorcerer’s elemental affinity ability says:

Starting at 6th level, when you cast a spell that deals damage of the type associated with your draconic ancestry, you can add your Charisma modifier to one damage roll of that spell.

The cantrip eldritch blast deals force damage, and force damage does not appear on the Draconic ancestry table.

Nevertheless, the Sage Advice Compendium ruling on elemental affinity states:

Elemental Affinity benefits one damage roll per casting of a spell, even if the spell allows more than one roll. So, for example, the feature improves one of the rays of a scorching ray spell or one of the beams of an eldritch blast spell.

Is this just a case of using eldritch blast as a contextually incorrect choice of category representative of the type of spells this Sage Advice ruling is addressing, or is there a way to modify the damage type of eldritch blast so that it is an actual use case for this ruling on the elemental affinity ability?

About Familiar Archetype Sage and Sage’s Knowledge?

Sage’s Knowledge (Ex)

A sage stores information on every topic and is happy to lecture its master on the finer points. A sage can attempt all Knowledge checks untrained and receives a bonus on all Knowledge checks equal to 1/2 its level. Additionally, a sage gains 2 skill ranks at each level.

Does the "2 skill ranks at each level" mean 2 skills ranks to add to a singular skill, all skills, to a class skill, all class skills, a X-class skill, or all x-class skill?

Can a multiclassed Spell Sage (wizard archtype) use the ability Focused Spells with a different class’s spells?

Can a multiclassed Spell Sage (wizard archtype) use the ability Focused Spells with a different class’s spells?

The ability says:

once per day the spell sage’s understanding of spells allows him to increase his caster level by 4 for a single spell cast.

Can this be applied to a sorcerer’s magic missile?

Plotting graph in sage

Is there a way to plot a (graph theory) graph in sage in such a way that physical distance between vertices is at least a threshold (say 1cm)?

Graph layouts should be the way to do it. I am looking for a solution which is not very complicated.

Context: I need to plot a cubic planar graph. The planar layout provided by sage is not very satisfactory (spring layout gives better planar drawings)

Thank you