You only showed that it can be evaluated in list context. Why did you ignore my snippet which showed how it can be called in scalar and void context?

sub foo { print "wantarray? ", wantarray?1:0, "\n"; }

my @x =(foo(),foo(), foo());
my $x =(foo(),foo(), foo());
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wantarray? 1
wantarray? 1
wantarray? 1
wantarray? 0
wantarray? 0
wantarray? 0
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