Considering the whitewashes England have suffered in the not too distant past, I'll take a couple more hammering wins before wanting more of a contest thank you!
To drop Lyth now would make the first 4 tests pointless for him. Yes he's been poor but if we are going to get the best out of him, they need to stick with him. And if the urn is won in this game, then it'll be the most pressure-free environment he could wish for in and Ashes series.