There are too many abbr. words in English! ;)
The word for those non-words is acronym, and there *are* way too many in use. The problem started because of the need to abbreviate while "texting". We now have a few generations, starting with millennials, who unironically use acronyms as words.
Obscure acronyms are used socially to define in-group preferences, and to obfuscate out-group understanding. This provides group defining opportunities to mock whoever doesn't know the lingo. A related problem is emerging with the use of self-censoring substitutions like "the B word" which can refer to multiple taboo words, or "the K word" you never heard before and don't know what is being substituted.
English is collapsing into a multitude of bizarre venaculars. The devolution can be seen in full with the emergence of hieroglyphic "icons" in software which mean something to the programmers, but leave the users struggling to learn a new dialect of symbolic illiteracy. The same sort of thing happened to Latin after the fall of the Roman Empire, to the point that no one alive really speaks the original language, but only several different incompatible dialects. It's all downhill from here. Enjoy the ride!