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Between the HIMARS, M270, German MARS and the French M270s, there are absolutely enough to be stationed every 30/40 kilometers
They're gonna need winter camouflage or else they'll stick out like boogers on a white wall. >

That's the point. They use cannon fodder to see where Ukrainians are shooting from so that the Russian artillery can target them >

except thanks to HIMARS that had kinda been neutralized quite some time ago. Since HIMARS outranges Russian batteries. Ukraine opens up on mobniks, Russia returns fire, maybe the Ukranian artillery is damaged by a lucky shot instead of an inaccurate shell from a worn out Russian barrel, but a nearby HIMARS will counter fire and eliminate the Russian artillery anyway.
Cannon fodder only works to draw out artillery if you don't have counter fire waiting for you. Like a pawn in chess protected from capture by a knight. >

You talking as if there's a HIMARS stationed every few kilometers.