The Onion

The word "soda" comes from the sodium salts in carbonated water, which reduce the liquid's acidity. The word may also come from the Italian word suwwād, which refers to a saltwort that can be used to obtain sodium carbonate. The first known use of the word "soda" was in 1558.

The term "pop" was first used in the early 19th century as a colloquial term for fizzy drinks. The earliest known use of the word was in 1812, when poet Robert Southey wrote in a letter that a new drink was "called pop, because 'pop goes the cork' when it is drawn". The term "soda pop" was later combined from the words "pop" and "soda" in 1863.

I mean soda was around to refer to a carbonated beverage hundreds of years before pop came into use. Plus pop is one of those confusing English language words that can mean a few different things (dad, loud-noise, carbonated-beverage, punch, arrive, etc.). You do you though. And keep thinking anybody who does things differently than you is weird. That's healthy.