Hi OP. Interesting points. I get the feeling that most companies simply do not care what their advert looks like these days, since they will be flooded with 1000s of resumes no matter what they post. I've been on both sides of the hiring process, and recently changed jobs. I didn't send a single resume to a single advert to get it. I just contacted people I worked with previously. I share that because my feeling is a job posting is a last ditch effort by a company when all other avenues already failed.
It’s long been the case that networking generally works best. But lately, between the tech job market, the frequent ease of applying, and algorithmic filtering, there’s this reinforcing cycle that tends to make a random application a low odds crapshoot.