A few years ago, I got a decent sized sealed bags of 2011 Nugget hops. I’ve kept them frozen and they still seem intact. Going on 9 years now, so feeling a little shifty-eyed about using them in a brew. What are the thoughts?
You could always try them in a small batch a see how they come out.
I would at least do that, but I like to gamble 
You could make some hop tea to test the flavor.
Open them up and give a sniff: hoppy is okay, cheesy is not.
Up to about six months ago I had some 2011 Belma hanging out in the freezer. The mylar bag was open and stored in a ziploc freezer bag. I had no problem using them even for bittering. Those nuggets are probably ok although they might not be the best tasting hops. Give them a smell. I’m sure they will smell as you expect.
THIS^^^. If well stored you should be fine.