That trial is designed to fail. Ivermectin needs to be used early on.
Who would waste money and which researchers would waste time doing a trial designed to fail?
Are you already using conspiracy as an excuse in case it shows ivermectin doesn't work?
So far, there has not been a single large trials showing ivermectin works - all those quoted trials are too small to have convincing evidence.
Which researchers wouldn't want to be on the name of a famous world's first large scale trial showing ivermectin works?