Einstiens biggest blunder was Discovering Dark Energy ?

[RainbowUnicorn]

https://www.youtube-nocookie.com/embed/wNHZjbcaJ2A

[C C]

While some retcon it this way:

Did Einstein Predict Dark Energy? (hubblesite.org)
Einstein's 'Biggest Blunder' Turns Out to Be Right (space.com)
Einstein's biggest blunder is right (uk.business.insider)

Others insist indeed that “Einstein’s Greatest Blunder” was REALLY a blunder!:

"[...] You might think that, because the cosmological constant does turn out to exist, and be non-zero, and because there is an intrinsic energy to space itself, that perhaps Einstein didn’t make a mistake after all. Nothing could be further from the truth. [...] The cosmological constant may have come back, but it has nothing to do with the reasons Einstein proposed for its existence, nor is it of anywhere near the same magnitude that Einstein suggested. Sometimes old ideas come back in new forms to solve new puzzles. Why do I tell you this? Because it’s tempting to revise history, to make our heroes even more heroic and to give them credit for discoveries that they themselves did not make. It’s also all too easy to fool ourselves, and to discount our own actual mistakes because there was a somewhat-related success down the road."