So "full stop" means a Period, right? A period is a period, PERIOD. That's all it is. It ends a sentence, so you start a new one. It doesn't contain any emotional ammunition. It certainly isnt passive aggressive, that's just stupid.
What's next? Are we going to start debating the tyranny of the comma, or the righteous indignation of the semi-colon?
Or maybe we should be debating the infiltration of our written communications by Big Emoji? They're obviously behind all of this, trying to encourage more emoji use, to stuff their coffers with that sweet emoji revenue.