Trashing talking and controversy is good. Apart from diehard tennis fans (and there aren't very many of us all), who cares about the Davis Cup or a tennis event that isn't a slam. At least this spices things up a bit.
It's like the WTA chief executive at the time admitted that he loved it when Hingis would trash talk other players in her press conferences at her peak, because that attracted interest from more casual fans.
Similarly Agassi catching the ball against Jaite during USA's Davis Cup tie in Buenos Aires in 1988 was gold dust for sports journalists and tennis fans as it gave them something interesting to write/talk about.