Conditional logic will not work on taxonomy fields. To use conditional logic you would need to either
1) Build conditional logic for the field yourself using JS. There is an old example of something similar here https://support.advancedcustomfields.com/forums/topic-tag/conditional-logic/
2) Use a select field and populate the choices dynamically using an acf/load_field filter and then update the terms in WP youself using and acr/save_post action and wp_set_post_terms.
