Let's start with the title. TAB separated data is not CSV, but Text::CSV_XS can do that too

use Text::CSV_XS;
my $csv = Text::CSV_XS->new ({ sep_char => "\t", binary => 1 });
open my $fh, "<", "dev.csv" or die "dev.csv: $!";
while (my $row = $csv->getline ($fh)) {
    print $row->[1];
    }
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