DP 1.4 vs HDMI 2.1

Hello, could you tell me why you are using DisplayPort 1.4 instead of HDMI 2.1. I noticed that a lot of people use DisplayPort, but why what's the difference between HDMI 2.1 Because HDMI 2.1 has higher bandwidth. So I don't really understand why people are stubborn about DP. I have a 4K, 240 Hz GB editor and I'm using HDMI