I'll quote directly from the Eastman memos and Trump's coup attempt itself:
"VP Pence opens the ballots, determines on his own which is valid, asserting that the authority to make that determination under the 12th Amendment, and the Adams and Jefferson precedents, is his alone (anything in the Electoral Count Act to the contrary is therefore unconstitutional)."
You can substitute "Electoral Count Reform and Presidential Transition Improvement Act of 2022" directly for "Electoral Count Act of 1887" and Kamala for Pence and you have your answer in their own treasonous words.