So Judge Cannon was not that controversial when confirmed.
She was confirmed Nov 12, 2020, by a vote of 56-21 with 13 democrats voting in favor and 23 senators not voting. Notably, this was after Trump lost reelection.
Either she was not controversial, or we do not know how to play the game.
Republicans always vote to block any democratic nominee (with a few exceptions here and there), whereas in 2020, we were still giving them the benefit of the doubt to Trump's nominees.
Here is a link to the how she answered questions from the judiciary committee:
https://www.judiciary.senate.gov/imo/media/doc/Cannon%20Responses%20to%20QFRs1.pdf
Below are the YEAs:
YEAs ---56
Barrasso (R-WY)
Blackburn (R-TN)
Blunt (R-MO)
Boozman (R-AR)
Capito (R-WV)
Carper (D-DE)
Cassidy (R-LA)
Collins (R-ME)
Coons (D-DE)
Cornyn (R-TX)
Cortez Masto (D-NV)
Cotton (R-AR)
Cramer (R-ND)
Crapo (R-ID)
Cruz (R-TX)
Daines (R-MT)
Enzi (R-WY)
Ernst (R-IA)
Feinstein (D-CA)
Fischer (R-NE)
Gardner (R-CO)
Graham (R-SC)
Grassley (R-IA)
Hassan (D-NH)
Hawley (R-MO)
Hoeven (R-ND)
Hyde-Smith (R-MS)
Inhofe (R-OK)
Johnson (R-WI)
Jones (D-AL)
Kaine (D-VA)
Kennedy (R-LA)
Lankford (R-OK)
Leahy (D-VT)
Lee (R-UT)
Manchin (D-WV)
McConnell (R-KY)
McSally (R-AZ)
Murkowski (R-AK)
Murphy (D-CT)
Perdue (R-GA)
Portman (R-OH)
Roberts (R-KS)
Romney (R-UT)
Rosen (D-NV)
Rounds (R-SD)
Rubio (R-FL)
Sasse (R-NE)
Scott (R-FL)
Scott (R-SC)
Shelby (R-AL)
Thune (R-SD)
Tillis (R-NC)
Toomey (R-PA)
Warner (D-VA)
Wicker (R-MS)