I don't think it is relatively difficult to make "Ethical" AI.
Simply refer to the sources you used and make everything, from the data used, the models and the weights, of public domain.
It baffles me as to why they don't, wouldn't it just be much simpler?
Except tox's graphical clients aren't maintained anymore
Put simply, a bot that interfaces with external services and replicates messages to/from a Matrix chat. The software is at matrix.org
Which bridge did you use, if I may ask?
Maybe try a Matrix bridge?
Unfortunately, no, no such platform exists.
The closest site I've seen getting to this was https://github.com/ZorrillosDev/watchit-app but their website seems offline for some reason.