Saying the problem is just because people hire and fire too often is such a massive oversimplification. If that was the main factor, the market wouldn't be anywhere near as bad as it is, and it wouldn't take hundreds of applications just to get an interview. Theres a whole plethora of issues from governments of developed nations usually adding loopholes to labor laws for foreign workers to supress wages, to the complete lack of competition/antitrust enforcement, to the increased push from companies and moronic liberatarians to remove social safety nets forcing people into abusive jobs, to the number of buinesses that have discovered that they can just use postings to collect valuable data rather than to hire. This is what has caused the market to break down - bad employee retention doesn't help, but that alone would be a small scale problem that weighs down the company practicing it.

If they dont like the mass posting on their platforms, they can start having a more humane process.

That was the reason I was complaining - even companies trying to hire honestly and humanely can't function at this point. The whole system is starting to come apart because the few at the top are too greedy and incompetent to even attempt to fix things. We need actual, enforced worker protections, and we need those in power to stop trying to prop up megacompanies, or the system will just continue to cave in on itself.