Why artists have a duty not to ostracise Austria by Norman Lebrecht / February 10, 2000 TO boycott or not to boycott? That is the burning question. Whether to ostracise Jörg Haider’s Austria until it returns a government we can approve of is one of those conflicts of conscience and self-interest that bring out the best and worst in cultural leadership. Gérard Mortier has led the exodus, resigning this week a year early as artistic director of the Salzburg Festival and precipitating instant withdrawals from a leading sponsor and conductor. More painful is the loss of Betty Freeman, who helped…