None AFAIK. It's a fair criticism. I'm not defending Labour's strategy per se. I'm talking about the LDs in the context of LD criticism of Labour's leader.
FWIW, to pick one local example of how well they operated on this, the LDs in High Peak stood a candidate that took 2,750 essentially pointless votes from a seat that the sitting Labour (and Remain) MP lost to the Tory by 590 votes. I hope High Peak LDs are engaged in some serious critical thinking today.
Labour has got plenty to worry about, including its leader.
So have the LDs, so it would be better for all of us if they started sorting their own sh1t out. They're still not materially better off than they were in 2015, which probably tells you how effective they are at that, and why Labour would do well to learn from what they've been doing wrong.