GitHub’s reliability issues started earlier than the boom in agentic coding they talk about. I have comments on here from 2025 talking about massive outages with actions and issues.
GitHub uptime is cyclical. It's bad because they won't focus on the core, and then the right users complain and GitHub focuses on core again before it repeats. This is just the latest round exacerbated by vibe coding
When you're the uncontested market leader, you don't budget operations to be perfectly reliable, you budget to not be too unreliable. All those 9's are expensive after all.
The AI boom caught them napping though, and they're slipping well into the too unreliable category