My findings are mixed. The add-on works as advertised, but the third party services it uses often don't. Bibliogram usage is now limited to begin with - as detailed in the "Future of Bibliogram" blog post - even on instances where it works. Nitter instance availability is also spotty, I had around 10-30% success rate. Unfortunately this all is not the author's fault, but it's what makes their add-on experience bad.