W.O.W. → FUD or something to be concerned about?

Be worried. The excuses about "we deprioritize ICMP" are pure bullshit. I have built and run many networks MUCH larger than WOW's. If you see packet loss, there is a problem. End of story.

However, in your case, the issue appears to most likely be your modem. Most likely the levels are out of spec.

Is that packet loss end-to-end? I am guessing that it is. End-to-end packet loss to a destination which is not ignoring ICMP is never good.

I don't think it is... also I get trolled.

»Terrible latency in Columbus, Ohio 05/11/2014

Fascinating. I have seen more of your Visual Traceroute graphs in the other linked thread. They have pretty visuals at the top but the interesting data is truncated, so we never see the whole trace, end-to-end. If you must have a pretty picture, at least Ping Plotter will show the entire trace:

Ping Plotter to Google.

The interesting portion is right there in the table if you look. First hop, 33.3% packet loss.

Indicates an issue between customer computer and the CMTS every time. Once you have packet loss first hop, all other numbers go out the window. Problem is could be anything from a bad ethernet cable or WiFi crapping out to a CMTS problem and everything in between. So more data would be required to do any sort of troubleshooting.