Later in the article
The warmest summer in the tree ring reconstruction before industrial times was year 246, but the researchers say that even this does not come close to the recent warmth.
Even taking account of the large uncertainties, the authors say summer 2023 surpassed this range of natural climate variability by 0.5C at the very least.
It is also worth looking at the graph later in the article, which shows that over the past 2k years the temperature has maintained a baseline, and post-industrial era it turned into a hockey stick.
Who else is better equipped? In my view it would solely depend on the lawyers that internet archive hires, and money plays a big factor in that.
Also, internet archive is going through the route process of how legislation gets overturned or upheld. Just because you perceive them as unworthy to bear the challenge doesn’t make that true, and as a result your commitment to not support them because they aren’t the one true chosen is ill-informed.