Not sure if you caught my last edit before you replied, but there is certainly basis for my assertion, like the lawyer and doctor examples and the article stating that some had to take lower pay jobs because of lack of opportunities/vacancies and having to only fill gaps. Another example from the article is the teacher, whose qualifications might be a gray area because of different educational systems, so it may or may not be transferable. The article is the source of my assertion, because it literally points out that it's the lack of job opportunities, the pandemic, and economic downturn that's causing them grief. Tech workers definitely have an edge there as those skills are universal, and in that case it boils down to availability of jobs.

Another basis of my assertion is my own lived experience. I work in tech, so it was relatively easy to transfer my skills and my employer just had to prove I could fill the job vacancy. My sibling who is a lawyer doesn’t have that same opportunity because their degree and title are not recognized in other countries. My other sibling on the other hand is a RN in our home country, and by getting qualified via the destination country’s affiliated-bodies, they are able to transfer their qualifications to at least caregiver status and work in that kind of job, which is lower pay, but still a job.

I’m not claiming lack of transferable skills is the core issue, I’m just saying it seems to be a factor based on what is stated in the article. The article mostly highlights lack of job opportunities after all.