When I say those other games cap your air speed, I forgot to say that the cap is very very small. In DOOM Eternal that cap from holding a direction is the same as the ground speed cap, while in those other games it's tiny, so in order to move in the air you have to do this turning tech which the players of those games called air strafing.
/ drakephose
Tech Tutorials Playlist:
• Tech Tutorials | DOOM Eternal
For the mods and tools, such as the free-scroll macro, console commands, and etc, I use to demonstrate things in these videos, please check out the "de-resources" channel of the Modern DOOM Speedrunning Discord: / discord
0:00 - Ground Movement
0:27 - Diagonal Ground Movement
0:34 - Ramp Ground Movement
0:47 - Ground Acceleration
1:03 - Air Acceleration
1:30 - Air Strafing
2:40 - History Lesson
4:54 - Summary