That, or if they're like me, the person is just very tired. If I am extremely tired, I basically just hit shift on every word and don't care about it. In such cases, I might fix my posts and comments in the morning, or even delete them if they feel too much like "what the fuck did I write there".
Another key to identify those is double words.
Example: I Only Started Started Using Computers When When I Was 14.
None of your replies even address the weird spaces before commas thing. I've directly asked people on Reddit and the answer is always idk if they even reply at all.
In German, the practice of inserting a space before punctuation marks is called Plenken. It used to be a common practice, but nowadays it is considered an error.
Auto insertion of space in mobile keyboards. Usually they also remove the preceding space when you press enter, but if somebody manually presses space after an automatic insertion of space then you get double spaces and only one will be removed
Yeah, I see people use commas as pauses where commas definitely aren't supposed to go and that make no sense whatsoever (to me, anyway, but I know not everyone has the same education, resources, etc.) all the time. I think that's part of what's going on here.
It sounds like our brains work very similarly, fellow random-parentheses-using scatterbrain! I'm both glad I'm not alone and also sad that you experience this frustrating shit, too, haha. I feel for you.
I much prefer the way you break up your thoughts, by the way. It flows better, makes more sense, and reads in my head voice more like it would if you were speaking (to me, anyway!)
It might come from languages like German where nouns are capitalized. Even in English proper nouns are capitalized so I don't see why that bothers you so much