This is important when vaccine supplies are limited (in some places in the world that's the case), but not if they aren't.
"Since then, one study after another has reinforced the single-vaccine-for-survivors idea, though some skeptics have pointed out that it is logistically simpler to just give everyone two doses than to figure out who needs only one...Cheng at Cedars-Sinai said she would still default to the CDC guidance calling for two vaccines, even for people who have had COVID-19. The data does suggest, however, that one dose could be enough"
I think supply is not the only thing to consider. I suffered a SARS-CoV-2 infection around Easter, and received my first vaccine dose a week ago.
The days after that I felt much worse that when I had the actual infection, albeit for a shorter time, so I personally would appreciate an official recommendation to not have to take the second dose.
"Since then, one study after another has reinforced the single-vaccine-for-survivors idea, though some skeptics have pointed out that it is logistically simpler to just give everyone two doses than to figure out who needs only one...Cheng at Cedars-Sinai said she would still default to the CDC guidance calling for two vaccines, even for people who have had COVID-19. The data does suggest, however, that one dose could be enough"
https://www.japantimes.co.jp/news/2021/04/18/world/coronavir...