Concerns about the sustainability of the company's dividend are fading fast.AT&T (T 0.59%) has been a disappointing dividend stock in recent years. The telecom giant slashed its payout by nearly 50% in 2022 when it unveiled plans to spin off its media division to create Warner Bros. Discovery. The company made the move to retain additional cash to reinvest in its business and reduce debt. It had struggled to deleverage its balance sheet in the years following that cut, which caused concerns that the company ...