How exactly is Lampard running Mount into the ground? He started the last 2 games against Burnley and Rennes but before that, he played only 37 minutes against Man United and Krasnodar. In fact, these are Mount's minutes since the last international break:
Southampton - 72 mins
Sevilla - 62 mins
Man Utd - 18 mins
Krasnodar - 19 mins
Burnley - 90 mins
Rennes - 90 mins
That is only 351 minutes out of 540 and that is also less minutes than before the last international break, where Mount played 450 minutes out of 540.
If anyone is being run into the ground, it's definitely not Mount so far this season. If you want to talk about someone being run into the ground, then it's Werner, who has played 971 minutes out of 1080 for us this season. And that is without counting his workload for Germany.