what a hack it is clear that this person has no knowledge of electrical wiring practics. or just doesnot care. he should be turned in and beat down for this.

is the second pic panel over loaded looks like more than 40 breakers in that pabel. what about each wire having a connector where it enters the panel.

what about only one circuit per knockout
is there 2 wires under the main lug in the second picture

wow i would to have gotten this job seems like fun