But they simply overrode the legislature and made up their own “laws”.
That's exactly what happened in PA. In PA, the PA legislature and not the PA courts or Gov office, have sole PA constitutional authority for creating election law.
The republican controlled PA House & Senate went to the PA Supreme Court showing that the PA election laws/rules were being overruled by PA Gov. Wolf. Those illegal rules primarily were the allowance of unverified ballot signatures and allowance to vote post election day.
The PA legislature brought their case to the PA Supreme and US Supreme courts - both of which would not take the case.
When our courts are unwilling to correct what is clearly unconstitutional law(s) - what other recourse is there? When state legislatures are impotent to implement their constitutionally legal laws and fradulent laws/rules are treated as legal or are ignored by the courts, we can expect a repeat of 2020 in future elections.