If you have pricacy concerns you can also look at the source code of the plugin and check it yourself

I for myself stuck with tampermonkey + script loaded there, but if the plugin keeps on getting updated more and continued developing on and the original script is discontinued, I will for sure switch to the chrome plugin.

EDIT:
Just tried out the chrome plugin.
Unfortunately I cant make the switch yet to the plugin since much needed essentiall features are missing:

• settings
• auto load for stuff like gcmap,... (also under settings)
• AA only has AA U.S. point of sale, no Europe POS anymore

But thanks for creating the plugin