Yes, it does appear that money counts. I bought my passage on the June 1 sailing of the QE out of San Francisco just 3 weeks ago as part of a "Sailing Soon" super-discounted deal, and I got canceled. Apparently the fact that I was paying double as a solo passenger did not make up for the difference.
I got my notice yesterday, three weeks or 21 days before my scheduled sailing date.
As for crewing the ships, I can see where Cunard would be having issues. The vast majority of the crews are from Asia and the South Pacific (India, Philippines, Malaysia, Indonesia). And because crew contracts are for six months, it is likely that many of the crew are rotating in June. And I am sure that it cannot be easy to get all of the necessary vaccination and testing documentation in those points of origin. Heck, it is difficult enough in the US and Canada! Imagine doing it in Asia! So I am not sure that it is an issue of finding personnel so much as it is an issue of getting them properly documented.
I am convinced that the issue is based in very poor planning on Cunard's part for the normal crew rotations as 6-month contracts end.
I don't think it has anything at all to do with "reclaiming cabin space for possible quarantines." The ships are already limiting capacity by double-digit percentages. How many quarantine cabins do they need if the ships are already deliberately operating 20%-30% below maximum? That's dozens of empty cabins! The QE is currently reporting Orange condition, or less than 0.3% of passengers and crew testing positive for COVID. That roughly correlates to less than 10 people (passengers and crew) who have tested positive.
The reality is that Cunard is simply unable right now to get enough crew onto the ships to be able to operate even at limited capacity, so they have had to reduce the limitation to an even lower level or lower number of passengers.
Nonetheless, I continue to maintain that this is an issue that Cunard should have anticipated and should have been prepared to handle more efficiently. Cunard has really screwed the pooch on this one, in my opinion!