On the latter: yes, this is part of the question but not the whole question. See addendum.
On the former: technically not true. If we take “human values” as “values averaged between different humans” (not necessarily by arithmetical mean, of course) they may be vastly different from “is this good from my viewpoint?”.
On the bracketed part: yeah, that too. And our current morals may not be that good judging by our metamorals.
Again, I want to underscore that I mention this as a theoretical possibility not so improbable as to make it not worth considering—not as an unavoidable fact.
On the latter: yes, this is part of the question but not the whole question. See addendum.
On the former: technically not true. If we take “human values” as “values averaged between different humans” (not necessarily by arithmetical mean, of course) they may be vastly different from “is this good from my viewpoint?”.
On the bracketed part: yeah, that too. And our current morals may not be that good judging by our metamorals.
Again, I want to underscore that I mention this as a theoretical possibility not so improbable as to make it not worth considering—not as an unavoidable fact.