That's not completely true - at least in the VFX industry we've been doing brute-force SSS (with multiple scattering) for more than two years now in some cases. Yeah, it can be slow depending on the MFP, but it's usable...
Cheats like Dipole/Dwivedi are still used when they can be, but they often have artefacts and aren't completely correct, so they're starting to be avoided now.
True, but it's biased, which still causes trouble with some edge cases, depending on how/where you bias towards - biasing towards point-of-entry isn't always better than not biasing depending on where the lights are, and it's cumbersome to set up for artists (depending on where you bias towards).
Cheats like Dipole/Dwivedi are still used when they can be, but they often have artefacts and aren't completely correct, so they're starting to be avoided now.