[randomidiot666]

>> If better GCs come out or tweaks to the algorithms are made, these configurations have to be updated. In contrast, Go programs gets these benefits for free.

> There is no reason why Java can't do the same by updating defaults. In fact, they often do.

Correct. The JVM guys always update the default GC to be the nearest to 'one size fits all'. Obviously if you've made a custom GC configuration then you want a level of tuning that Go does not provide.