Well, both these missing DLLs are referred to as "dependencies" of wrapper DLL "kernelxp.dll"; but @cmalex has never provided them in his custom, XP-targeting, CPython assemblies, e.g.
https://mega.nz/folder/jst2WJ5B#sknEpEBamwPomx8UULWuMA/file/igNWhbCb
so he should know better ; in fact, I have tracked those wrapper DLLs (kernelxp.dll, ntext.dll, psapi.dll, ws2_xx.dll) inside below folder:
https://mega.nz/folder/KxExlAiC#L9rAQ5kTCtlHgZUwaxMpgw/folder/Os1DmLgL
and the accompanying README simply states:
In any case, PyInstaller just issues WARNINGs, no fatal errors, and the resultant packages function as expected; so, these warnings can be regarded as "red herrings" and can be safely ignored; just my 2c ...