

It’s really only a “full stop” when it’s the last or only sentence, not just any sentence with a period. It’s related to phones only adding the period if you hit space twice. So by default, single sentences never have it because you don’t continue typing. So actually putting it in is intentional for many people and they are in fact making a statement akin to “this is my final word on the matter”.
It’s the difference between
“Can you help me with this?” “No”
And
“Can you help me with this?” “No.”
That extra “.” after “No” wasn’t strictly necessary, so by including it on purpose, you’re making a statement. That’s the general thought process going on with people who find it passive aggressive.
You can also go back even further to T9 typing and texting shorthand and see that punctuation was largely ignored due to message size limitations and difficulties typing on a phone in general. It’s something that has evolved over time due to the medium. The main issue is people who have gone through this transition see it one way, and people who are used to more formal writing suddenly joining the internet see it another way. I would say it’s more like regional accents. Both are correct depending on context.




Look, I explained how it developed and why it’s used that way. I also explained the difference between a “full stop” and a “period”. If your reading comprehension is that terrible, maybe don’t get involved in discussions about linguistics because it clearly went right over your simple minded little head.