Crypto ULT damages teammates but Caustic ULT doesn't: Explain?

@Ingeniekey It doesn’t physically damage teammates shields, many ults affect teammates by slowing them down like gibralters, bangalores, crytos, and I think maybe even horizons it just used to be frustrating to be blinded, slowed, and stuff whenever your teammates gas was going off all around you and it was a decent Quality of a Life buff for Caustic