The Frustration Loop

> Every 5 to 10 seconds the element focus switches to a different input so while they're typing in one area, they may accidentally start typing in another in a mildly annoying way.

I think this shows how clueless many webmasters are, even today. state of the art these days is to capture the needed request using MITM Proxy or similar, then just replay those requests using the client of choice, NOT a browser. if you want to combat this stuff, just return a 429:

https://developer.mozilla.org/docs/Web/HTTP/Status/429

and include the proper response header:

https://developer.mozilla.org/docs/Web/HTTP/Headers/Retry-Af...

stop doing this boutique crap, and stop trying to reinvent the wheel. its annoying, ESPECIALLY if it hits valid users.