I think there's a spectrum these days. (I tried watching that video but the auto-translated subtitles were... lacking. So if my thoughts conflict or overlap, that's why.)
"Hard rape" like you find satirized in Rance games is relatively rare (aside from something like a game called "Orc Attack" or something) and at least notable as a tag when it appears, but a lot of hard rape's cousins are more ubiquitous and less objectionable by the larger audience/community.
First, in "dominance" centered games (like slave trainers/PT/Wife or Witch Trainer) there's an assumption that at some point, the object of desire in question is going to be bent to the MC's will (or vice versa in those TFG games) and a lot of things that would scream "rape" in a standard modern setting, like the woman's status as indentured servant or slave or assignee or general imprisonment, are somehow seen as immaterial to consent. It doesn't matter than Princess Jasmine can't leave because when you eventually have sex with her, you've either maneuvered her into circumstances where she cannot refuse by her own thinking (like when you're whoring her out) or she submits to you when you call her. Keeping her like a slave has already destroyed all that character's agency and the game is about, from that point forward, either breaking what remains or manipulating her into giving it to you by choice. It's not about rape so much as control and, candidly, developers/fetishists know that pure physical control/dominance/rape is boring and the whole point of those games is to eventually dominate the inner mind/life/soul of the sexual object.
Second, in "conquest" centered games, playable characters often violate consent in ways that happen to give the resulting sex the veneer of consent. Mind control games. Incest games where you need to either drug your mom/sister/cousin or get them drunk as often as you need to raise their mood or affection stats or find their toothbrush for them. Those games are about access and accomplishment and influence (as well as dominance) and so while you'll often figure out how to trick a potential sexual partner into sex, at some point after, they usually come around to willingly servicing you sexually. It's not a "rape" game, but yeah... that's all rape. At least in the US. But that they don't usually stay rape past the first encounter speaks more to the game's goals. Once you've "caught" them, the whole point is that they're "yours."
Third, "corruption" based games, which often have female PCs. Again, these women are often put into situations that violate consent and therefore "count" as rape, but they are very rarely just locked in a room and used. There's usually some "trick" or "drug" or "scenario" at play that coaxes out the behavior that might qualify, but, again, the whole point is that the playable character eventually comes around and starts participating in those scenarios willingly (plus you have a Player controlling that Female PC who wants content and therefore will put the PC into sexual scenarios as often as they are able... the "Player Character" and the "Player" eventually become more and more the same and therefore consent is less and less an issue.)
There aren't that many "rape" games... in that they are preoccupied with sex without any consent at all, but lots of games use rape to explore their real interests while either not exploring it or pretending that it is not rape because many of the elements have been delegated to the game's conceit rather than the player's actions.
My own application of this also stems from the underlying goals of the project. I don't think that you can really have good cheating/ntr when consent is violated on the part of the object of desire. If someone rapes your girlfriend, that's a terrible thing that happened. If someone drugs and blackmails your girlfriend behind your back until she's mentally challenged or accepted her life as a prostitute... that's another terrible thing that happened. If your girlfriend, on her own, decides someone else is better than you in every way and either breaks up with or cheats on you... that fucks you up. Nothing happened to her and she's still the same person you wanted. The bad thing that happened was you, at least in her eyes. Any of the above tropes would only seek to explain or soften that blow.
... that's my take anyways.
