If I recall correctly, it mentions the voter fraud as being proof that many irregularities happened in the 4 states as a result of unconstitutionally implementing mail in voting.

Therefore the legislative hearings provided backup for this part of the case.

The whole Dominion thing, and all other fraud become now byproducts of the unconstitutional actions of these states. It's a very good way of looking at it since it provides a strong reference point for the reason behind all the fraud.