You are reading the wrong news sources then. So many European countries have changed their recommendations “after the fact” especially for children and young adults
And yet after asking repeatedly nobody can provide me a source where they have changed their minds after the fact about the first booster
The 1st booster was recommended to everyone, further boosters only to older population. In US (with the exception of Florida), further boosters are still recommended to 5+ (five year olds and up), while that's no longer the case in lots of countries. Or, you are implying the cited above sources were for the 1st booster as well and thus they haven't changed their minds?