I don't think 1000 applicants on a job is "bots applying automatically", that's just developers in disbelief trying to patch their feeble psyche with an explanation they can stomach. I seen this thing a lot on other professions than IT. Even ones that need some relatively difficult college degree and professional license like accounting. For a while there was a slight shortage of accountants so universities kept producing them, now a job has 200-300 applicants and they aren't bots. "Secretary" easily gets over 1000, I remember some time ago seeing 1500+ on a position and thinking "how can one be so stupid or desperate to even apply anymore"?
Well, hundreds of thousands of graduates spitted out by universities and bootcamps coupled with an economy downturn and here we are: developers are the new secretaries. Hope you know to type well ladies and gents coze you're gonna need it to get that job competing with 1000+ with about the same skill.