I don't care about having a perfect rotation and doing the highest dps. I prefer doing less dps if it is safer. So I'm wondering if Singular would be safer from this perspective than other CRs.
Yes. Blizzard obviously has ways to infer that people are botting. Perhaps a perfect rotation would be an indicator.
Been PVP'ing with instant interrupts and dispels for over a year now. No bans. Been using countless CR's with only the best rotations. No bans. Tyrael to me is 99.999% safe unless you are using a profile the uses an in game macro.
Look at it this way: Singular is the default routine, so more people use it. It's more likely to find a pattern in everybody using the same rotation then when it's differentiated a little. Then again, no-one can confirm they actually look at how we execute our rotations.