I don't know how you're qualifying "even the highest qualified young engineers are struggling to get offers" but that doesn't jive with my experience these past couple of years. I'm not young any more but it still feels like a job seeker's market (spoken from the viewpoint of a fine but not outstanding engineer in his mid 30s, in a tech hub)
I said I'm willing to bet, meaning I have a hunch, not actual data. My hunch is based on personal experience, reading recent posts on HN about job searching, and seeing statistics on websites like LinkedIn and Glassdoor implying that many jobs openings have hundreds of qualified applicants. Granted, my hunch may be based on trying to get jobs at well known companies which is probably more competitive by nature, especially in a global market. Getting a job building marketing software at a mediocre agency for $45k/year is probably super easy. But most people don't want that.