I only managed to watch the first two (censored) episodes before the series was removed. Those two alone were certainly crude, but aside from the subject matter being more directly about sex, didn't feel any worse than High School DxD or Monster Musume in what was actually shown. From what I've heard though, events in episodes 3 and especially 4 certainly sound like they may cross a line for Funimation.
I've also been told that the anime was already more explicit than the original manga, where "encounters with monsters of the night" (shall we say), were largely left to readers having to read the in-universe reviews. I could totally believe that Funimation weren't actually aware of how far the anime team would be going with this adaptation, until they received episode materials and panicked.
That said, it's disappointing from a preservation perspective. While AnimeLab are continuing with the series in Australia, for much of the English-speaking world, the series has effectively been snapped away from legal existance. It's a reminder that streaming isn't permanent, and can be taken away at any time, without warning. This story is also a perfect example of the Streisand Effect. Interspecies Reviewers would have fallen under the radar and been largely ignored had its simulcast continued, but now it's the most talked about show at this time, anyone who wishes to check it out will be drawn towards piracy. Just an unfortunate situation all around.
