Let me guess, Republican right? It sounds like you have an ideological reason for keeping things the way they are in the US. What people mean when they say the US has a 2party system friend, is that it is a 2party system in practise, even though not formally. The reason that it becomes 2party in practise, is because of the American first past the post election system and also because its regional representation system. Both keep smaller parties from gaining power and making a threat to the bigger parties. In countries without those 2 systems, like many European countries, democracies commonly have many more political parties in practise, and power switches between them, and there are often coalitions to create a majority. This is both better for minority groups as well as for preventing power becoming entrenched, both of which are good for democracy and freedom. Also your argument that many multi party systems eventually move to 2 parties having lower is really not true, just have a look at all European countries that don’t have regional representation and first past the post election systems.
This article neglects to mention what I am wondering most about: is there any merit to this case, are similar lawsuits staeted in Europe for example? Or is this another example of the US administration, funded by many many oil and gas dollars, going after the commercial enemies of its main financial supporters?