The graph is quite shocking to me. Looks like the series was coasting around a constant 76.5-ish until 2019, where it completely nosedived twice in a row. Is this due to COVID?

Just to clarify for other people who were confused, life expectancy increased until 2019 inclusive, then nosedived. So Covid (or higher-order effects of Covid and the response) must be responsible.

Hard to say. What we know for sure is that it 100% does NOT have ANYTHING to do with the safe and effective vaccines. I can’t believe people would even think that!

Wouldn't Israel, the most highly vaccinated nation on the planet, see a similar effect? Or other highly vaccinated groups?

Israel isn't the most vaccinated nation on the planet; it was merely the one of the first to have access to vaccine doses. They're basically on par with the United States now:

https://ourworldindata.org/explorers/coronavirus-data-explor...

Hmm but that does not include boosters, which Israel was also proactive about distributing.

I got pericarditis after the booster, it felt like it was going to turn into a heart attack at any moment. I’m fanatical about my health so I could easily imagine others who are less careful getting a heart attack from the vaccine. And due to the anti-vax stigma I’m sure it’s under reported.

But I’m assuming covid dominates the deaths.

I found it especially confusing how certain numbers were presented as the 2019-2021 delta and others the 2020-2021 delta without any way of seeing all the data together. Thanks for linking to the original source as when I looked for it last night I found it difficult to find.