OTOH dates back to the 90s and has since remained very common in internet writing. It is more surprising that you've never seen it than that someone used it.
I've been an extensive internet user for decades and I don't have it in memory, so I'm not sure how to feel about your assertion. I'm not the only person saying this.
I'm not just being pedantic, it's a fairly mainstream assertion in linguistics. I don't find those words synonymous. They have different performative content. I don't know if this applies to other languages.
I've been an extensive internet user for decades and I don't have it in memory, so I'm not sure how to feel about your assertion. I'm not the only person saying this.