It’s not whataboutism because the fact that the value of free speech was only granted to a privileged few addresses your argument that the USA once valued free speech and things have changed. If free speech was only granted to a privileged few why should we ever think of it as some societal value that was lost? It appears to me that the privileged few that saw themselves in the demographic gifted free speech are the the people who are angry their speech is criticized. We all still have free speech by the definition of the constitution but now there are decentralized public means to criticize the powerful. And there is popular sentiment supporting that criticism.