Foundation posts have not suffered as much as specialty posts. I have not heard of any unemployed F1s.
The massive unemployment in August is doctors without a training number not F1s. 60,000 applicants for 12 ,000 specialty training posts.
IMGs want NHS specialty training as most have been doctors for quite a while and it enhances their CV.
Why do you think we should not be prioritising NHS specialty training for UKMGs?