First, the Foundation should host a fork of BLOOM [
https://huggingface.co/bigscience/bloom ], which if I remember correctly was described by the Foundation's Machine Learning Director Chris Albon as the only LLM at the scale of GPT-3 adhering to the movement's FOSS criteria.
No, BLOOM is not FOSS by any means.
It fails freedom 0 of the four freedoms from the Free Software Foundation[1], and it is not recognized as an open source license by the Open Source Institute (and will not be as it fails requirement 6 of the open source definition[2]).
So that model, any other using the RAIL license, is a dead end.