As a non-native speaker I would welcome more "grammar nazis" in places where well educated native speakers can be found.

One of the reasons children learn new languages quite rapidly is because they get corrected the whole time.

Not correcting people hinders actually their progress in language learning… Even if it might seem impolite it's the one thing that helps a lot, if not even most, in mastering a foreign language!

So thanks for being a "grammar nazi". We need people like you.

(No, that doesn't apply to the causal typo. But I guess most people can differentiate such a thing form true grammar and spelling mistakes; especially if that are "typical" mistakes).

The link says it can still be lead. Lede seemingly came about fo random reasons. I learned the opposite today. That I can still write lead instead of lede. M

No it isn't. "Lede" is a neologism arising from people convincing themselves they had inside information. It's been "burying the lead" as long as the phrase has existed. Your own link explains that.