Because job requirements are all the same

Every job requires you to have 3+ years experience.

Every job requires you to have excellent problem-solving skills.

Every job requires you to have excellent decision-making skills.

Every job requires you to have excellent customer-facing skills.

Every job requires you to have excellent written and oral communication skills.

Every job requires you to be able to manage priorities.

Every job requires you to be able to meet deadlines.

Every job requires you to be able to work independently.

Every job requires you to be able to work collaboratively.

Every job requires you to be a team player.

Every job requires you to be a fast learner.

Every job requires you to be highly motivated.

Every job requires you to be passionate about your work.

If the requirements are to be believed, all job candidates must be identical.