YQ is supposed to be named as "Extra fee" in the fare breakdown available at time of booking, and then be included in adios calculation.

Do you know what it was called when you booked? Or can you replicate booking and check now?
Because they clearly promised "extra fee" would not count as "taxes" but spend, but maybe they introduced another YQ that they treat like taxes? If so, buyer beware, it will be very interesting to know the specifics of this YQ