If there's anything I've learned in my family's own mental health explorations.... its that anxiety takes on many, many forms... and that technology has magnified things which trigger and cause... well... things. So I'm not surprised to read that Text Anxiety is real and that people have struggles with it.
The article I've linked here takes us inside what this is, and how people deal with it... Give it a read and remember... mental health is a thing, it's okay to talk about it and you aren't going through whatever you are facing... alone!