Can the human infringe by doing the learning for another?

[βαθμιαίος]

even the assessment of whether there can be an infringement, a 'learning for another' requires wisdom, also, understanding, which are traits of blue ray.

Maybe, but it can also be done with intuition. By the way, Ra uses understanding synonymously with fourth density ("the vibration or density of love or understanding").

fire hose like sharing of information is rather the trait of 5d positive it seems. and the amount of freedom accompanied.

Maybe, but refraining from sharing is sometimes wise, as you point out in the addendum to your post.

delicate matter of compassionate, sensitive, empathetic service, would become a matter of 6d ray, since you include the concept delicate in it.

It was Ra that used the term delicate, in advice given for third-density conditions.

the 4d entity would be extremely compassionate to the point of being suicidal and being prone to sacrificing itself for others. s/he seeks to put itself in between all the dangers and those to be served, heal all wounds, prevent any pain. it doesnt even pay attention to anything like infringement, because the nature of this density is as such.

Hmm. Free will still applies in and to fourth density. Fourth-density entities may want to solve everyone's problems for them, but they will surely lose polarity if they do so. They are trying to learn wisdom: "the vibration love being that density in which those who have learned to do an activity called “loving” without significant distortion, then seek the ways of light or wisdom."