This article doesn’t tell you anything. In the OJ case, The Prosecutors requested the change of venue. They requested it because the courthouse was bigger. It’s a very unusual stance that the prosecutors took. It had nothing to do that it was moved to downtown LA to get a jury of his peers by the defense.
Change of venue motions are almost exclusively done by the defendant. The OJ case there was not a change of venue. The Prosecutor chose to file the case in downtown LA. It had nothing to do with the defendant requesting the change of venue to get OJ a jury of his peers. In OJ, the defense would certainly agree to that change
This is out of the mouth of the OJ prosecutor.
https://www.pbs.org/wgbh/pages/frontline/oj/interviews/hodgman.html