Their primary product is still proprietary, and if that's not bad enough, it's essentially completely spyware at this point.
I don't want to use their crap open source products so I can integrate with their crap proprietary SaaS ecosystem.
Just because they're finally deciding to release some token software with some level of open source, and buying political influence via the linux foundation, doesn't make them a friend of free software. There is more to free software than just the license: their strategy of vendor-lockin via Terms of Service instead of EULA, they are merely seeking to 'vendorize' free software projects to integrate with their paid products.