
The ‘forbidden’ part has to come from somewhere, and historical racial taboos are an obvious source for that tension. It’s not like interracial relationships are universally accepted, it’s still a major point of contention in the world, and literature grounds itself in reality. If you remove that conflict it’s no longer a forbidden love trope, seems pretty straightforward. Seeing that as POCs being perceived as undesirable instead of as a criticism of society is your problem.
As a POC myself I really disagree with what the OP is saying. For a forbidden love trope to be forbidden there has to be a source of conflict. There is plenty of literature out there that presents POC as desirable, cherry picking a trope that requires conflict and a level of undesirability is counterintuitive. Along with that the most famous examples of this trope deal with class, social standing, and religion rather than race. It’s a straw man in complete honesty.
Bar Shakespeare and Harper Lee, the majority of notable instances of this trope involving race are actually written by POC authors themselves not white people. Toni Morrison’s “Beloved” and “The Bluest Eye” are absolute masterpieces, Celeste Ng’s “Everything I Never Told You”, Zora Hurston’s “Their Eyes Were Watching God”, I could go on and on. Nobody wants to read a racial forbidden love trope written by a white person because there is no experiential authenticity.