Within a tourney, chances is that 80% of players do not need to call the directors thru out. There may be players who would call directors in f2f bridge but opt not to do so in online bridge. So the tourney has given fun to many players. Bad ruling does not outweigh their running a free tourney.
For paid tourney I suppose we do have every right to needle

the directors.
Hope the free tourney directors are still having fun, especially the non-playing directors