It's fine to be mildly annoyed that they include Mansa Musa or whatever, but the only people writing off a 120 hour game because there's one black guy in it are people who don't actually like video games. They just want to rage goon about news articles.
1. Making Hans Capon gay recontextualises all the game's dialogue with him, and retroactively does the same to his interactions in the first game, as being in service to a gay romance that may or may not ultimately come to pass. This harms both Hans and Henry from a writing point of view, since their relationship as compatriots is lessened as it seems like it's meant to culminate in a romance that most players may not even bother to see out. Hans was also a real person, so making him bisexual seems disrespectful. He's also 15-16 at time the game is taking place, something they emphasise in the codex of the first game as he is underage and thus unable to inherit any titles.
2. Musa also makes no sense to be included (Being a combination of Mansa Musa from Mali and the Islamic explorer Ibn Battuta), he also talks down to Henry and the local culture whilst also espousing the superiority of his own and makes no attempt to hide his religious affiliation in more devout lands than the more cosmopolitan realms Battuta visited. If he acted as a passive, neutral observer like the real Battuta, he'd be slightly more tolerable than the version we got (The real Battuta didn't insult the foreign cultures he paid visit to directly as far as we know, he reserved any snide remarks to his writings). This character can also not be disagreed with in his observations, cannot be killed, and his survival and defence is mandatory for the main story.
3. The game features an anachronistic synagogue and Jewish community in order to portray a pogrom which wouldn't occur until far beyond the game's actual date. You also must defend the community, participate in its rituals to progress the main quest, and cannot draw your weapon within the synagogue - a restriction not placed on the player in KCD1 in its churches (None of which you can enter in this game). Similarly, Henry cannot disagree with the Jews regarding their treatment.
4. The gameplay has also been dumbed down from the first, with more passive AI, a simpler parry system, and gameplay more reminiscent of more contemporary first person action games with melee such as Mordhau, albeit with even less mechanical depth. The supposed improved crime system also appears to be a lie or exaggeration.
5. The hard work the player put in over the course of the first game to build up Henry's skills, abilities and status is rendered largely moot and people for some reason treat you even worse here than you ever were in the first.