It really is strange when people freak out over a player getting criticism. Lukaku no doubt had some nice moments of quality, especially in the first half. But there's no doubt he was largely poor the second half aside from sending in a few crosses (which was the only option he had anyways). Putting in a shift isn't something that's going to make me rate a forwards performance, especially someone we paid 75 million for to lead the line. Hell, I'd rather him not move when we aren't in possession, and then provide real quality going forward then be largely crap going forward but track back a decent amount.
Bottom line is there are a few here that have taken up the mantle of defending him at all costs, and then the rest who are on the opposite spectrum. Not gonna change.