Why Japanese surface raiders offered little value by 1944

Could Japan meaningfully attack American support lines with its remaining fleet in 1944?

Not to decisive effect; Japan lacked an efficient raider, and the strategic opportunity had already passed.

The Imperial Japanese Navy did not possess a purpose-built surface raider suited to distant commerce war. A Town-like cruiser with reconnaissance assets, 6-inch guns, and generous fuel capacity would fit the mission better than a heavy 8-inch cruiser. The Tone class might attempt the task, but its size made the operation costly. By 1944, even successful attacks on American support shipping were unlikely to change the outcome.