What are the repercussions of the Sword Coast Adventurers Guide errata to the cantrips Green-Flame Blade and Booming Blade?

In the most recent update to the Sage Advice article, Green-Flame Blade and Booming Blade have received errata to their range and spell text, being altered from

Range: 5 feet

to

Range: Self (5 foot radius)

Furthermore, the text of GFB and BB have been altered from

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise the spell fails.

to the phrase

You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you.

How do these changes alter the way that these spells are used, and how they interact with features or feats, such as Spell Snipers effect of doubling a spells range.