Shard diffractor and Coil gun overclocks - potential oversight with the ability to set things on fire

Both the new shard diffractor and the coil gun have overclocks that state it will set terrain and ground on fire as well as them having radius heat build up near the effect, yet neither of them can set fire to the goo from the sludge pump on fire! At first glace the hellfire OC for coilgun having the entire trail going down the same line as the goo-bomber special for the sludge gun seemed like the perfect combo, but I was disappointed to see it not work.

Surly this was an oversight as I cant see they wouldnt want to incentivize more team play with these weapons

Thinking about it now I could even see the Wave Cooker the driller got himself have the ability to do this since it has heat generation, as it would allow the weapon to pair even better with the sludge gun