As with many other endeavors, Covid 19 is affecting international sailing negatively. Local officials in some Asian countries are not as well versed on entry protocols during this time and, as a friend reported from Malaysia, there is a reluctance to process international sailors for fear of getting it wrong. Asking sailors to continue to the next country is one way of avoiding the issue.
You should have little trouble in finding passage from the west coast to Hawaii during the middle of the year following the end of the hurricane season. However, the trip further west will be ruled by prevailing thoughts on Covid 19 and may well change from week to week dependent upon the local rates of infection at your destination.
The relatively slow rate of passage means the goalposts may be moved several times without your knowledge. I realise this is of little practical use as far as your trip is concerned, but spending many weeks or months en route only to be refused entry at your intended destination would be a serious problem both for you and for the unfortunate owner of the sailboat who may then be hamstrung by your continued, enforced presence.
Hopefully the situation will be resolved before the end of the year, but for now, there a great many cruising sailors hunkered down and unable to leave their current ports due to the problems created by this virus.
"if at first you don't succeed....Redefine success"!