Colleen Shogan, The Archivist, just made history

[muriel_volestrangler]

11. More about the extension in your struck-through bit

In March 1972, the amendment passed both chambers of Congress with bipartisan support far exceeding the two-thirds majorities required by the Constitution. Congress promptly sent the proposed amendment to the states for ratification with a seven-year deadline.
...
By 1977, only 35 states had ratified the ERA. Though Congress voted to extend the ratification deadline by an additional three years, no new states signed on. Complicating matters further, lawmakers in five states — Nebraska, Tennessee, Idaho, Kentucky, and South Dakota — voted to rescind their earlier support.

In 1982, following the expiration of the extended deadline, most activists and lawmakers accepted the ERA’s defeat.

https://www.brennancenter.org/our-work/research-reports/equal-rights-amendment-explained

I can certainly see that the idea that the more recent ratifications by other states mean the required 38 states has been achieved is highly debatable.