Everyone’s got their own motivations. Listen to it all, review what facts eventually surface, and apply critical thinking to determine the veracity of the original claims. Assign credibility, accordingly.
The biggest problem I have with the “qualification” argument for Trump’s appointees is that almost every one of those in congress making the “unqualified” argument has little credibility based on prior approvals. Based on all that has come out since the Twitter files, and continues to come out, the two qualifications I require before even considering anything else are, 1) The folks most likely involved in the corruption object, and 2) They didn’t get rich during public service. No problem in government is more important to solve than corruption. Nothing is even close.