Not only did they failed to do properly perform their job but at current count, more of Hillary Clinton's electors voted against her than her opponent's voted against him. For a system that was supposedly designed to keep unsuitable people of the White House, they instead eagerly allowed one in. Note this from one of the aforementioned articles:
"Many Republican electors dismissed the pleas to 'vote their conscience,' pointing out that their consciences were perfectly fine with Trump."
Hmm...so their collective consciences are "perfectly fine" with racism, misogyny, conspiracy-mongering, trolling, praising a foreign nation's efforts to sabotage an election...I hope all those electors are happy with themselves.