People will take monsters that were taken from historic folklore, like orcs, and try to reinterpret them as some modern racial insult. People will complain that a game that has its roots in fantasy settings based on medieval Europe hasn't always reflected 21st century American norms of diversity.
Orcs are an interesting case. They don't exist in historic folklore. There are a couple of poetic references, to the best of my recollection, before Tolkien invented the species. In Beowulf, from which he drew the name,
orcneas is just a generic reference to an evil spirit or wicked creature.
Tolkien himself wrestled with them, and whether it made sense in his worldbuilding for them to be irredeemable or innately evil. He went back and forth on it. Later he opined in letters that orcs are really something of a metaphor (though he usually didn't care for metaphor or allegory) for the cruel, debased and warlike side of mankind, and that "orcs" were to be found among the worst people on all sides of WWII, for example.
It's far too fashionable now to take something, call it some form of bigotry (racism, homophobia, sexism, transphobia), and raise a stink on social media all to drive likes/clicks/views. While bigotry is a very bad thing, there seems to be an active effort to try to find anything in a LOT of popular culture that can be called those things, and I think it's just for the social media likes/views/clicks etc.
Yes and no. I think there are some shallow and immature folks on social media who do indeed sometimes make mountains out of molehills. And that the nature of media is to amplify outraged and outrageous voices, especially as there are incentives for it. Advertising revenue and sharing/"engagement"/likes demand clicks. And sensationalism gets more clicks.
But I do think there are also plenty of people making a good-faith effort to understand and critically interrogate some stuff we've ignored or not thought hard about in the past. They're doing legitimate work to help society progress and make it more inclusive.
D&D definitely has some very colonialist concepts underpinning it, and some racist stereotypes have poked in here or there. Which makes sense. Human beings were responsible for writing it, and lots of humans have some pretty racist ideas. OTOH, the archetypal multiracial adventuring party also exemplifies different people from different backgrounds with different strengths and skills coming together to work in a good cause and fight evil. So D&D has some strong positive aspects as well.
I'm sure I won't change any minds with this, but I'd like to say that in the roughly quarter century I've been a part of the gaming community, it's been one of the most inclusive, tolerant subcultures I've ever known. We're geeks, we're outcasts, we're the kind who take in fellow outcasts. . .we're not bigots.
I've seen both in the... 30-odd years I've been playing and interacting with other gamers. Some ARE bigots. Many others deeply take to heart the messages of diversity and of unity and tolerance seen in major geek media like Star Trek and Lord of the Rings.