Semi-agree. I've had 2 mx525s fail within ~6 months of purchase but I've also had a mx anywhere 2s that I bought used and got 3 years of usage out of it before I had to replace the switches.
Three years is below what should be considered acceptable, let alone impressive. I got a bit over ten years of really heavy use out of a dirt-cheap Genius mouse ($3-4) before it had to be replaced, and not because of the switches but because of the physical wear of the case.
I wouldn't buy a cheap mouse from them again.