There are cables that are less microphonic, and I think it might be possible that if you wrap the cable around your ear instead of going straight up it's supposed to help also. I don't personally like the around the ear thing--feels like a bridge too far for me look-wise, but I'm not everyone.
But I'll get on my shtick for a second: I love my ER4SRs. They've basically saved my career. They're small, there's no latency, there's infinite battery life, essentially everything is replaceable, the sound _perfect_. I super wish they made a (non-Lightning) cable that had a mic in it (I know there's 3rd party ones but haven't had a lot of success there yet and quit trying), but it's a small inconvenience. I can mostly work anywhere under almost any conditions, which has turned out to be important.
[1]: https://www.etymotic.com/product/shirt-clip-for-er-series-ea...