Personally, I haven't encountered any bad actors. Aside from maybe 1-2 companies that seem to have evergreen postings on Who's Hiring.
If there are bad actors, I'm guessing they're so few in number that only a fraction of us will notice.
How likely is it that these 2 companies are actually hiring?
If a company was really needing to hire constantly for a year and wasn't a consulting company, rapidly ramping up adhoc projects, the highest likelihood it seems to me is that the management is really bad and they suffer high churn where they are going through candidates like candy (or they fear they will loose people and are building a queue to tap into during attrition).