From what is written, they plan to reduce the control of where ads are placed, but still allow enabling or disabling them.
Anyway, at present it's possible to disable them if you have reached the monetization requirements on the channel, like 1000 subscribers and some amount of hours viewed.
Anyway, at present it's possible to disable them if you have reached the monetization requirements on the channel, like 1000 subscribers and some amount of hours viewed.