No, they were rampant for a while in the consumer audio world, and there are a number of designs similar in nature (at least at a high level) in production today but the problems have been (mainly) solved. A.la. Benchmark's AHB2 among many others. It is possible to do it right, and usually is these days (I would hope!), but not something I really follow anymore. I do not know the penetration of class D into consumer home audio these days. Certainly significant, but a lot of current receivers, amps, and AVRs still use AB/G/H power amps so I don't know the percentage. That'd be interesting to know. Judging by other fora and magazines (which I no longer receive since the first of the year), class A and AB still dominate the mystique of the very high end (or at least very expensive) players.