Yes, but having a complete copy of all my projects in a matching self-hosted environment mitigates a huge amount of risk because it would still be there if I go

Yes, but having a complete copy of all my projects in a matching self-hosted environment mitigates a huge amount of risk because it would still be there if I got banned from GitLab.com. I could still use the workflow and tooling I'm used to. Contrast that with GitHub where losing your account means losing the workflow and tooling you depend on. I'm not talking about trying to re-host a controversial project though. I'm more interested in the risk to the average small developer where getting banned would ruin your life, but wouldn't make the news.