> None were discussed on merits.
Incorrect, read some of the cases. Quite a few were dismissed on the merits. Literally your own link says “YES” in the Decided on Merits column! Did you not read your link?
Some of the later cases were not decided on merits because they were filed so late (e.g., suing over a change suggested by Republicans used in the 2016 Wisconsin election to fill in missing zip codes and then used again in 2020, or a change passed by Republican legislators in 2019 and promoted by them to the public in 2020 in Pennsylvania, and only complained about after Biden won).
However, some courts did reach the merits and found the claims of Trump campaign and his allies to be completely meritless. Note that Giuliani and his associates, when under oath in court, stated their cases were not fraud cases but then went to press conferences and claimed they were.
https://www.cnn.com/2020/11/21/politics/federal-judge-dismis...
> Judge Matthew Brann of the US District Court in the Middle District of Pennsylvania called the Trump campaign's case "Frankenstein's monster" for its poorly stitched together legal theories.
>
> On Friday, a federal appeals court dealt the Trump campaign's effort another blow, with a Trump-appointed judge writing in a scathing opinion that the campaign's lawsuit lacked proof and that its allegations in Pennsylvania "have no merit."