[byroot]

> their webhook worker(s) being swamped

That's a capacity problem caused by a logic bug. Nothing stack specific. If you throw more work at a system than it is designed to handle, you'll hit a bottleneck.

> Your snark doesn't change reality

What reality? You are just barking your uneducated opinion. No one who ever worked on a service anywhere close to the scale of GitHub (regardless of the stack) would make such statements.