Anecdotal, I have seen Razer mice go bad, but Naga. Various Naga, btw, though admittedly with extensive use. I've also had various Razer keyboards go bad. Deathadder mice, however, have been great for me (I've had two). I even had one of the first for almost ten years. You can replace the feet on these mice, btw, but it isn't well advertised. Also, keeping them clean and having a good mousemat helps. A friend of me had a Razer mouse double click issue (unsure which one) and used a piece of paper to fix it.

The Deathadder was once a legendary good mouse but Razer no longer delivers the quality for the price I'd appreciate. And they seem to focus too much on their disco light BS (Chroma) which I don't need. Their mechanical keyboards are in my experience lousy (Anansi also didn't suit my needs): noisy and cheap key caps. I do like that my BlackWidow has USB passthrough on the right side. Works very well together with YubiKey and/or fingerprint reader.

FWIW, I'm in the market for a new keyboard which can be used for (but not primarily) gaming (don't need dedicated arrow keys, home/end/del/etc nor keypad) but has to be a silent, mechanical keyboard with USB passthrough on the right.