No it wasn't, let's not start spreading misinformation.
Spellcheck was around since the 1990s. Originally it was simple heuristic-based against a dictionary (localized, maybe also allowing some personalization). Noone called it AI, pre-2010 AFAIK. Can you show any pre-2010 citations for any actual mainstream consumer-available spellchecking using AI?)
I only see a small number of references to the use of AI in spellchecking, mostly post-2018, and they're still the minority of mentions of spellchecking, dictionary heuristics is still a simpler much more basic technique, even if ads don't say that. (There are now (post-2018, GPT-era) AI-based spellchecking/writing-coach/style-type startups, and obviously there are also many companies trying to infuse their collateral with claims about AI, or pivot/bolt on AI to a non-AI concept. Let's not muddle all that together.)
And the moon was settled by whalers sometime in the 1750's! Seriously, you're approaching that level of wrong.
The first non-research-project spell-checker was in 1971 and came from the Stanford Artificial Intelligence Laboratory (SAIL), where earlier research on spell checking had been done.
This website ("hacker" news) should really be renamed "confidently wrong"; just like smcin's laughable assertion. HN is a propaganda site run by billionaires who editorialize and moderate it to promote their own interests. It's infested with this type of confidently wrong know-it-all. You know what's worse than a pedant? An incorrect pedant. And this site is stuffed with them. It's a Dunning-Kruger hall of mirrors.
https://www.psychologytoday.com/us/blog/how-do-you-know/2020...