I mean, this flatly contradicts this line in the CLA:
> Except for the license granted herein to Grafana Labs and recipients of software distributed by Grafana Labs, You reserve all right, title, and interest in and to Your Contributions. [emphasis mine]
You can always use the version of the code your contributions went into. You still own the code you wrote, and still retain the rest of theirs under its original license. You're just not entitled to future versions of the source like a copyleft license without a CLA would grant.
I understand not being excited to serve corporate interests (that's what a CLA does), but posting intellectually uncurious flamebait as a result makes for boring reading.
Yes. Everything. That's the point of near-every CLA.
So the corporation behind it have option to close the code if they want to, taking your contributions with it.
Some corps might not ever do it, but any company is one MBA away from "what we can cut from OSS version and move to enterprise to get more customers"?