No amount of activist movement will ever make Steam to terminate sales on this game, the whole point of censorship and omitting the hentai element is exactly to failproof this. As long the game doesn't have it, even Steam cannot do anything because the product they sell is like that, no porn, no virus, no thing of harm and of indecency. And retard activist can go pull out the official link for the hentai, but it will amount to nothing because you can argue those are just mods, like Skyrim sex mods, this does not count to Steam policy as it is beyond their jurisdiction, not to mention installing a mods is completely on the user volition and not enforced nor endorsed by Steam.
this method has been going for years and it proof to be failproof. reminder that during last year purge, the one that got purge are moronic publisher who are too lazy to even doing anything about censorship and separating the content. Publisher like Kagura Games who did censoring actually take zero casualty, and some big publisher like Shiravune somehow, good for them. i say there's no risk as long you did it right, and even the worst case would be getting your game taken down from Steam, and you still can continue selling games on DLsite, but you still rip profit from selling it on Steam.
Although i would say the profit wouldn't be as much as you did in DLsite, it's probably not that big so not worth the effort to localize it. Take example of Kagura Games highest peak player count: Winter Memories, at 12k player, assume the number of sales is twice of that meaning 24k copies. Meanwhile the sales on DLsite has reach 90k, the amount of profit they got is barely quarter to DLsite profit, not to mention dev also need to give share cut to publisher (assuming that's how the agreement goes). By the way, this is only for Winter Memories, everything else only have below 5k count and compare to their sales on DLsite it's about 10x difference if we make same assumption of (peak player count x 2 = total sales). So yeah, the effort don't worth the profit to be honest. The risk doesn't outweight the benefit, the but the effort doesn't match with projected profit