Clarification from the article, they did not dump 400k recently, the numbers are spread over several years.

Over the past three years, Oklahoma election officials removed 143,682 voters who moved out of state, 97,065 who died, 14,993 duplicate registrations and 5,607 people who were convicted of a felony, according to the governor’s office.

Inactive voters made up the largest share of the removals with 194,962. These are voters who haven’t participated in any election throughout four consecutive general election cycles, generally spanning eight years. They also would not have responded when the state Election Board sent them an address verification letter.

The main problem, as noted in the article, is that removing people for being inactive is terrible. Yeah, they need to clean up people who move out of state and who pass away, but inactive voters should not be the biggest chunk of voters removed no matter the time frame. Honestly, there is no real reason to remove them just for being inactive.

Friend of mine shared the article with me, reminded me that I needed to update my address from the wrong county. Still in Oklahoma but I didn't change it in time for the mayoral election a few weeks ago.