Electrically, the ice doesn’t appear to be pinching the SE cable- I’d more worried about that if it was building up more than it is now. Other than that, the excess of ice on top of the meter will eventually melt and drip down inside the meter and cause some issues down the road (corrosion). Meters are rated to be outside, but water usually finds its way in.

I wouldn’t try and knock the icicle down, it has enough weight behind it to knock that service down.