"like we did not go thru all that james baldwin posting earlier this year for you to post screenshots EXCLUSIVELY of black people sipping starbucks and denouncing palestine"
I find this kind of argument odd. It largely ignores the fact that most of the time Americans have spent pushing the issue of Palestine, has been to call out Black, non-Black, and white voices who've consistently disregarded the lives of the people in occupied Palestine as an issue concerning Americans.
This specific instance, regarding the "sudden abandonment" of the Palestine movement by Black dems/liberals (from July to November) that got documented on Twitter and TikTok, was specifically spearheaded by Black voices and Black media creators.
The Madeline Pendelton incident where she calls Democrats vile genocide supporters, which then spurred on "Madeline is antiblack because she hated Democrats, which includes Black women", was an instance of Black people weaponizing Blackness against a valid judgement that just happened to come from a white nonbinary white person.
Non-Black people are certainly sharing screencaps of the above, but they're not the stewards of this moment. The origins are of Black people sharing screenshots or posts about people in their community showing their asses doing that.
The most visible people having these discussions on social media (that I've seen and interacted with), and circulating these posts, are Black. Black people critiquing or calling other Black folks out for it.
Black people were calling other Black folks antiblack for calling out Black liberals for their denouncement of the Palestine movement, running to Starbucks, claiming credit for the movement's visibility, all to cape for Kamala Harris once they made her presidential nominee.
Black people started the conversation about Beyonce's NFL nonsense being propaganda. Black people who still considered themselves fans of Beyonce's music. And they got dog piled by the Black Beyhive.
Black people are having community discourse, and Beyonce stans are moving goalposts to avoid acknowledging her existence as a billionaire and a tool for US Imperialism by defending American nationalism by tying it to Black Southern tradition and denouncing Black women with white mothers as "not Black enough".
"[...]and singling out black ppl to make them the face of it all is SO OBVIOUSLY antiblack scapegoating"
This isn't a situation of singling out Black people to make them the reps of genocide, apologia, and imperialism.
Black people becoming just another face in the imperial propaganda machine is happening, has happened. It's not scapegoating. That effort is happening on a state level, and it's impossible to ignore that the Black boujie class and even the working class are eager to take part in that shift. From the two stooges in the UN representing the US during the Palestinian Holocaust for the Biden Admin, Condoleezza Rice, Kamala Harris, Umar Johnson, Beyonce Knowles. Most of the Congressional Black Caucus.
Let's go further and acknowledge the African politicians working with the U.S. and other superpowers destabilizing places like the DRC, Sudan, Haiti, etc. The average Black person on the street who agrees America should attack or invade North Korea (despite not knowing where the fuck it is on a world map).
Black people having public discourse on hostile social media platforms about these things, and getting their content pushed, is not singling out Black people and ignoring all other 'races' (particularly, white people or non-Black people) doing similar or the same things.
It's possible to acknowledge that Black conservatism and liberalism is showing a concentrated effort of moving to the right, esp in how they engage in anti-colonial or anti-imperial discourse. That this is becoming a hindrance to liberation, and not go directly for "this is antiblack" because the moment is focusing explicitly on Black voices committing this tomfoolery. It's a Black discussion being carried out predominantly by Black people in spaces like Twitter and TikTok.
I think trying to paint what folk are seeing online happening with Black political thought as a smear campaign (by solely focusing on nonblack folks engaging with it), in this instance, is a reductive and irresponsible way of looking at the situation.