Whether or not a child is at risk from a browser search and result is not relevant to whether or not a child is at risk from a voice assistant search and result.

They are separate concerns and considering the browser case does not nullify the necessity of considering the voice assistant case.

For example, replace “10-year-old” with “3-year-old” (a simple and effective safety test for potential threat to children) and apply that test to both devices:

A) Could a 3-year-old child be reasonably expected to operate a keyboard-browser search and result interface? Could they be placed into danger by doing so?

B) Could a 3-year-old child be reasonably expected operate a voice assistant search and result interface? Could they be placed into danger by doing so?

The answers to A and B are not the same, because the threat models (to the child) are very different when “can read and type” is not taken for granted, as is implied for a 10-year-old. This is why the US has a safety commission to consider these things: common sense can hide critical threats to children that are invisible and unrecognized by well-meaning adults.

The issue is that Alexa stripped important safety information out when summarizing the result. If a search engine does something similar (such as Google with their answers), I see no reason why the search engine shouldn't be reported the same way Alexa should be.