protip: SCOTUS is not big on hearing all viewpoints, that's what the paperwork is for. Most people who want to speak during oral arguments are told to go pound sand.
The solicitor general gets to. It is literally his job. The solicitor general LITERALLY has an office in the supreme court building. They also appear before the court more frequently than anyone else.
Saying that because the solicitor general gets to speak, we need to hear out every fucktard who can file an amicus brief is stupid. It's stupid no matter the subject matter of the case. It is nearly as stupid as suggesting that because there's a conservative jsutice showing up and speaking, that we need to let all voices from the left be heard there.
You can read the pile of shit argument here:
https://www.supremecourt.gov/DocketPDF/18/18-280/112062/20190812163502955_Amicus Brief of Corpus Linguistics Professors and Experts.pdf
I will put forth as something to keep in mind with regard to their argument this question:
Do we generate more documents, especially the government, with regards to the machinations of war, or with regard to Farmer ted running around with his hunting rifle? Because the entirety of their argument is that because the majority of written use is referring to one context, nothing written down could be of another context. Despite the fact they slyly admit that not all usage was referring to a military when discussing the bearing of arms.
It would be kind of like me arguing you can't be an artist without being famous and citing as evidence the sheer pile of news, media postings, etc. that refer to famous musicians and actors and such as artists and then saying there are lots more of those occurrences than other uses of the word artist. Thus, first amendment protections on art as free speech should only apply to artists that are famous because that is the most prevalent use of the work and thus its dominant meaning in all cases.
Which is total bullshit. It's a gun grabbing academic smelling their own farts and telling you they smell fine.
It also completely ignores the fact that even if you do accept that bearing arms was primarily used in a context discussing military entities, you are talking about the context of a document written at the time where the only military was supposed to be the people. We weren't supposed to have a frikin standing army. So what frikin military were they reserving that right to?