It's racism when people see basic concepts like "diversity is our strength" and assume it's virtue signaling because it happens to involve non-white actors. That theme comes up over and over again in Jackson's movies. Probably the biggest example is a scene which Tolkien purists no-doubt lost their shit over: when the elves show up at Helm's Deep. The development of the friendship between Gimli and Legolas, despite the racial animus the two shared at the beginning of the story, is also a huge part of it. And it goes right down to "even the smallest person can change the course of history" (another change/addition which undoubtedly enraged those for whom nothing would have been acceptable but a shot-for-shot adaptation of the novels). What idiots on the internet call "virtue signaling," everyone else just calls "storytelling."