Kind of wondering this myself. The only outright body check in P9 is Levinstrike. Dual Elements will double up and kill someone but that's been standard for years now. They moved away from mechanics just omitting a dead player after Neo Exdeath because players were cheesing mechanics by intentionally saccing and using healer LB3. P10S is a bit more egregious with body checks, especially the enumeration stacks which are unnecessary for a second fight but even a tank yeeting themselves can be recovered if people are quick to adapt. Hallowing Hell is definitely a tank check though. If either one of them dies, it's game over. That being said, I actually don't mind it as this is supposed to be his "big" mechanic. You shouldn't be able to limp through it.
Moving on to P11 and almost nothing is a direct body check. You can survive Styx with dead players unless it's a healer. Which isn't new at the Savage level. Everything else will either only target alive players or kill someone who doesn't have a partner. Even the two main mechanics Dark and Light and Letter of the Law are be salvaged depending when someone messes up. The former doesn't kill you outright until the very end so long as you realize your mistake and separate before both of you take too much damage. You'll die to Emissary's Will but again, you can live the follow up Styx with enough mitigation/shields.
P12S has more partner checks than outright body checks except for Paradeigma 3. And that depends who dies. P12S is a bit more heavy on the body checks but it's also the last fight so I'm not all that bothered. Especially when the DPS check is extremely forgiving. In general, the DPS checks are nonexistent this tier. There needs to be difficulty coming from somewhere. If people don't want the few body checks we have, then be prepared for another P8S where your comp will actually matter. Savage shouldn't be zombie-able.