In the past week I’ve had multiple instances of two bulk detonators showing up together in a single mission. It’s not just happening with the more enemies modifier, but even without it, the bulk detonators are showing up so much I wonder if somebody on the dev team touched a variable accidentally (kind of like when nitra was spawning like 10x too much for a while).
I think it’s just some lucky rolls. Personally I only got 1 this season so far.
I did get 2 dreadnought back to back though, so I know how you feel.