Has anyone else seen ads for a class action lawsuit against 3M for hearing problems?

A facebook ad came up in my feed saying, "Standard issue ear plugs given to service members between 2003 and 2015 may have been defective. If you were active in any branch of the military during this time and suffered hearing loss, you may be eligible for financial compensation from the ear plug manufacturer."

I gave them some contact information and they sent me some papers to sign. It looks legit, but I'm wondering if anyone else has any advice on this. It looks like it's a win-win: I was issued earplugs during the time in question, and I did get tinnitus for which I've submitted a VA claim. It looks like if they win the lawsuit I could get compensated, but if they lose then I'm just back where I started.