use of xsltproc without '--nonet'

[Richard PALO]

I noticed (by chance) some uses of xsltproc without the '--nonet' option in the following files:
> extras/CustomTarget_autocorr.mk
> extras/CustomTarget_autotextshare.mk
> extras/CustomTarget_autotextuser.mk
> solenv/gbuild/UIConfig.mk
> solenv/gbuild/platform/macosx.mk

Is there any particular reason these cannot be forced to build locally like the other uses of xsltproc?
-- 
Richard PALO