They are showing that the author of the tool has comitted massive copyright infringement in the process construction of the tool.
...unless they licensed all the copyright works they trained the model on. (Hint: they didn't, and we know they didn't because the copyright holders haven't licensed their work for that purpose. )
It doesn't matter if a company charges or not for anything. It's not a factor in copyright law.
69 MJ is 19.17 kWh. About 86p of electricity at today's wholesale price in the UK (£45/MWh: today is fairly average).
The research they are doing is great, but there's so much engineering to be done to turn fusion into something practical; something capable of running streams of pulses, not just single ones.
This was the last experiment for this reactor running it outside of design limits.