Main Panel Splice Question

I have a splice question.There are two panels ,the panel on the right is the primary panel (three phase) fed with 4/0 aluminum wire. There are several splices present using split bolt type connectors wrapped in electrical tape. The wires spliced feed the 200 amp panel on the left.I was thinking the split bolt connector may be OK… but the main feeds?

Spit bolt splices are permitted in panels when the gutter space isn’t overfilled. IMO that would be the case here. There are several other issues.