My request has finally been accepted after 2 years.
https://github.com/Facepunch/garrysmod-issues/issues/2445
We will soon be able to remove +r_hunkalloclightmaps 0 from start parameters.

@UltimateByte any ideas if this change has happened ye?
"r_hunkalloclightmaps" = "r_hunkalloclightmaps" ( def. "0" )
It's been set by default, we can remove it from default config!
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