Telemetry, but I don’t know if many Linux user doesn’t turn it off. But I also don’t know if many Linux user doesn’t fill bug reports.

Also, if you use Fedora you may recommend it to people that will leave telemetry and/or file bug report. And you also contribute to make the red hat ecosystem relevant, potentially bringing paid customers for RHEL. It’s a drop in the ocean of course, but personally I don’t want to contribute to it.

And don’t report bugs when you find one ?

The only issue is that you provide free testing for IBM, so it’s a no go if you try to boycott/avoid US companies. If you don’t it’s indeed a great choice.