I'm not familiar with that case, but I don't think an accusation that using a text mode browser like Lynx constitutes "hacking" would stand up to any type of scrutiny. (I'm not a lawyer and I'm in the US; things may differ in the UK).
Lawyers will make the most egregious leaps and grasps to paint the opposing party in the worst light possible, especially in the early stages of the case, because if they don't claim that Lynx is a "hacker's tool" in the initial pleadings, then it may be looked upon with suspicion if they try to raise that point later. So they are essentially trying to reserve as many potentially beneficial claims as they can at once, including (and especially) any claim that may portend that the other party is a devious scoundrel with the worst possible intentions.
Lawyers will thus front-load with every kind of tenuous, ridiculous accusation they can (without presenting a significant risk to the licensing), expecting some of it to get "laughed out of court", just so that on the off chance that it doesn't, it will help their case.
I'm sure a real lawyer would contest that to some extent, and I'm sure there is slightly more nuance to it than that, but that is my layman's assessment and I think it is roughly accurate.
The takeaway is not to take legal pleadings too seriously, because the goal is not to find justice per se. It is for your side to win, to get what it wants, under the assumption that that automatically represents justice.