I appreciate the functionality and convenience of this add-on, but I have a major concern regarding its use of Russian search engines. The Russian Federation is an aggressor state that launched a war against Ukraine, and its search engines are known to share users' data with state security services. In the settings, there is a "Yandex Host" option that cannot be removed, which effectively forces users to rely on infrastructure from a hostile and untrustworthy jurisdiction.
Using search engines from a country that is actively waging war against another European country is incompatible with basic European values and solidarity. While the add-on is otherwise convenient and effective, this design choice prevents me from giving it a rating higher than 3 stars. I strongly encourage the developer to remove Russian search providers or make them fully optional (disabled by default).