Potentially, but we won’t know until we start hearing that people who bought boosts get banned one way or another. Definitely wouldn’t risk it. HOWEVER.
No. Blizzard has stated very clearly that this ban only goes into effect on February 8th when Phase 2 launches. Meaning you can effectively engage in anything that falls under the ‘GDKP Umbrella’ right now until Thursday without risk of being banned.
After Thursday though, I would no longer risk it or touch any sort of dungeon/raid service for gold with a hundred foot pole.