Mass Video Privatisation/delete Theory:
This is under the assumption that everything she has claimed, regarding seeing professionals, is true.
Chantal most likely has mentioned her oh-so-thriving YouTube channel to her therapist and they have requested to view said channel.
Considering that videos that have been removed have all been from the last month, also consistent with the time she has claimed to have been seeing a professional/s, this may all be a feeble attempt to hide all evidence of binges and poor intuitive eating habits.
What's concerning is that the videos that escaped her exodus are still considered horrendously unhealthy re: content and/or portion ... which suggests either she truly, truly has no concept of what healthy eating is or she is attempting to sprinkle in mild set backs to make her recovery journey more realistic.
I'm leaning towards the former.