I am one of those weird people that like mouse accel (linear, non-game engine) and in order to apply a consistent accel value to various FPS games, I have to use InterAccel (https://github.com/KovaaK/InterAccel)
It's obviously not any sort of cheat or unfair advantage and is entirely free of any of that sort of stuff. povohat and Kovaak (dude behind Kovaak's Aim Trainer) are behind it and it is extremely useful if people want to play with custom mouse accel values. It's completely allowed on programs like ESEA and FaceIT, Easy Anticheat, Valorant's Vanguard, and every game that involves FPS and anticheat stuff.

I am wondering if there are any BF4-related softwares/services that will view it as a "cheat" or whatever, for obvious reasons, despite it not being anything like a cheat.

Thanks

This will not yield a ban from us. We cannot say whether Punkbuster or FairFight ban for it but BF4DB will not ban for this as it doesn’t give you unfair advantage over other players.