Could be risky and a privacy risk. Read
https://www.databreaches.net/web-of-trust-wot-add-on-taken-down-by-chrome-firefox/
https://www.pcmag.com/news/349328/web-of-trust-browser-extension-cannot-be-trusted
https://www.makeuseof.com/tag/web-trust-data-breach-accident-money-grab/