To offer a data point (not a tribalist argument): GitHub Actions being down this often is still less expensive than the cost of switching everything somewhere else. Would rather have my team walk away from the PRs and do other tasks than have engineering effort, meetings, design pages, scheduling, etc. for switching over.
This is annoying and I'm here because it's down. But it would have to be far worse to come close to actually being worth changing.
We've started writing some new workflows against argo-workflows for the last like 9months or so. Especially for use cases where the actions are like self-service type automation.
I think people were so excited to move away from jenkins to something 'managed' just because of how much a dinosaur jenkins is and how much a pain in the ass it is to upgrade it... but now we are seeing how managed can bite you in the ass if the manager is incompetent.
A case study in vendor lock-in.