PCB Routing Guidelines - Part 15 (Avoid Right angle bends? Always?)

I was in a PCB Layout meeting, where there was a signal routed with 90 deg bends. Everyone started pouncing on the PCB Layout owner regarding the 90 deg bend and there was even a comment that this board is going to fail EMI. This is a ENABLE signal, which is going to control a chip and hardly the frequency is going to be more than 1 kHz. For a signal with frequency < 1 kHz, does it matter? The straight answer is NO. Unless we have higher frequencies in microwave ranges, we can safely use 90 deg bends. But PCB layout engineers are always hesitant to use 90 deg bends on low frequency signals. Any PCB manufacturing issues with right angle bends, may not be!