[tex4ht] why can't this one line in pgfsys-tex4ht.def be corrected after so many years?

[Nasser M. Abbasi]

Each time I install TL, I have to edit the file

/usr/local/texlive/2017/texmf-dist/tex/generic/pgf/systemlayer/pgfsys-tex4ht.def

And make the known fix (thanks to michal.h21) which is to change
the line

\def\pgfsys at svg@newline{\Hnewline}

to

\def\pgfsys at svg@newline{^^J}

THis issue is known since June 2014.

https://tex.stackexchange.com/questions/185349/error-using-pgfsysdriver-with-tex4ht-only-shows-up-with-texlive-2014-ok-with-t

Is there any technical reason why this one line can't be changed after
almost 4 years?

Thanks
--Nasser