@Dmitry Maslennikov and @Robert Cemper I started doing some research regarding this, here is one mention of it being more efficient: link. Here it goes in a  bit more detail.

Well deserved, congratulations!

I may be imagining things, but I think the "strange" names for the globals are there for a specific reason - to make access faster. I will have to do some research in documentation or in Learning materials, but it came up during my preparation for InterSystems SQL Specialist certification. So, I would suggest leave the names as they are unless you're planning to go directly through globals to work with data.