Is Gas Strike really that bad?

So I like to take Orbital Gas Strike on bug missions almost exclusively to hold down breaches and I think it works pretty well. But a week or so ago, a high level player (I am in the mid 30s) gave me shit about it in the loadout screen, as it apparently sucks hard. For the sake of being a team, I then switched to Orbital Gatling Barrage, which IMO does exactly the same thing.

Is Gas Strike really that bad? Am I stupid?