When I see people complaining about the hiring processes for many low qualification jobs they often have no idea just how many people they are up againt. They get annoyed because they didn't get an interview, but if you are getting 50 applicants for every position you're not going to interview even half of them.
As my boss likes to say, bulk recruitment is an exercise in saying "no" as efficiently and quickly as possible, whilst pissing off as few as possible (you want them to reapply or not hold a grudge against your brand).
Recruitment is very easy to screw up.
You can do all the basics right, but a lot of people are still going to be pissed off when they get automatically rejected based on a computer scoring the 100 candidates for the position, even if you explain why that is necessary.
I do think more companies need to be more honest about applicant to hire ratios, but the reality is that a lot of people treat anything short of hand-written letter from the hiring manager explaining in detail how they could have done better as a slap in the face.
The last back-end position I applied for had like 15 applicants
I firmly believe we are getting closer and closer to the truth here...