Only 1/3 of the Trezor devices currently available has a SE. I see nothing on their site about the SE being open source. Last time I checked, a few months ago, there were no open source SEs on the market anywhere.
Correct 1 out of the 3 optjons they offer has an SE for those that think they need an SE. Hahaha you obviously don't dig deep enough. You could have always looked into what kind of SE they use, and the license associated with a quick web search. Just read the headlines. Good for your "toxic bitcoiner". 😆