adversely of/to

[Ostap]

Totally separate from the O'Brien show, The Jay Leno Show ended after a very short run on February 9, 2010, due to low ratings, which, combined with NBC's poor primetime performance then, affected viewership adversely of its lead-out late newscasts on many NBC stations.[17]

Late-night talk show - Wikipedia

en.wikipedia.org

Hello everyone. Does "adversely of" sound idiomatic to native speakers? Shouldn't it be "adversely to"?

 

[5jj]

The 'of' goes with 'viewership'. not 'adversely'.

 

[Ostap]

The 'of' goes with 'viewership'. not 'adversely'.

Then if "adversely" goes with "affected", shouldn't it be "adversely affected viewership of its lead-out late newscasts"?

 

[5jj]

Yes.