As pandemic prolongs easing, BOJ warms to idea of wider band for yield target

Yet the Yen remains strong which is absurd.

Sounds like a sop to the struggling commercial banks. (In the US, mortgage rates are based on the 10-year Treasury note, and I assume it's the same linkage here.)

Yet the Yen remains strong which is absurd.

Yes, but not absurd because Yen is a RISK APPETITE currency like US$. If there is any conflict in any part of the world, a pandemic or a huge catastrophe, Yen and US$ rate will rise against RISK AVERSION currencies like GBP, CAD, EUR, etc. And if you ask why is YEN higher than US$ and vice-versa, the answer is they follow "Fundamental" like yield curves, unemployment, GDP's, etc. and "Technical" like charts and trends.

World's economy can only be appropriately revitalized and quickly revived after the virus spread has been put under proper and definite control. China did that..

At the moment, there is no sign of pandemic abating, and nations are busy carrying out vaccinations when new variants emerge. How long more would people have to wait?..