Yup, Corsair replaced a pair of modules that were ~4 years old for me earlier this year, they even shipped the replacements first before I sent the bad module in - all at no cost in the end (only a deposit for shipping first, which was fully refunded once they received my old modules). I didn’t even realize they had lifetime warranty at first, didn’t think such things even exist anymore, so it was a really nice surprise.
I had years of infrequent random crashes that I finally tracked to a bad DRAM module - I was kicking myself for not running the full memtest earlier.