What happened with Iron Bundle?

I remember before Reg G started people were expecting Iron Bundle to get a huge spike in usage due to Miraidon becoming available, who pair well together because of electric terrain and Bundle's ability to check ground and dragon types. And at least for the first month or so they were right, I feel like nearly every Miraidon team I encountered had a Bundle on the roster as well. and I DID feel that it was a legitimately threatening duo, However I very rarely see this combo anymore. Miraidon is at around 11% usage while Bundle is only at 1.1% so at the absolute most it's only a member of 1/11 Miraidon teams now. So what caused it to fall out of favor as a partner to one of the best Restricted Pokemon in the reg? Or am I just misremembering how frequently used it was at first?