(Disclosure: Work at Microsoft, but I work in Azure and some open source stuff, not on or directly with Fluid/Office/etc.)
That's just a trademark clause for Microsoft logos and brands. The Fluid Framework itself is MIT licensed [0] and doesn't require exposing any of those logos/brands when you use it, so the framework itself is fairly open for usage.
I think the main thing that would slow down adoption for Fluid is that the only "production" backend is an Azure service, which isn't part of the open source Fluid Framework. Other open source backends[1] aren't recommended for productions. Until there are some open source ones, I'd assume adoption will be limited to folks in the Azure ecosystem.
That's just a trademark clause for Microsoft logos and brands. The Fluid Framework itself is MIT licensed [0] and doesn't require exposing any of those logos/brands when you use it, so the framework itself is fairly open for usage.
I think the main thing that would slow down adoption for Fluid is that the only "production" backend is an Azure service, which isn't part of the open source Fluid Framework. Other open source backends[1] aren't recommended for productions. Until there are some open source ones, I'd assume adoption will be limited to folks in the Azure ecosystem.
[0]: https://github.com/microsoft/FluidFramework/blob/main/LICENS...
[1]: https://fluidframework.com/docs/deployment/service-options/