I find this a bit odd because It really means that if fletcher or proxy lays down their explosive on one area it’s essentially sterilized because the only way to get rid off it is by it exploding.
Knifing it should be a sort of “disable” instead of it blowing up in your face, so they can actually be countered.
So, if you disable, lets say, a proxi mine, the owner can still back up, aim at it and “trigger it manually” while you are busy knifing.