IMO This is correct in theory but… the minimum requirement to run WordPress is 5.6.20+ so I can understand that bricks team takes in to account that some of their potential customers could be still using an outdated php version.
It’s far from ideal to keep supporting php5 but we have to understand that they are not developing only for ideal clients that keep their libs always up to date, there is still a lot of people running old php versions that would not convert if they don’t support those version, and let’s be honest, they are trying to run a business…
If php 8.2 becomes a requirement for using wordpress tomorrow, I’m pretty sure half of the internet would go down 
and not only because of wordpress but also for the thousands of plugins that would start throwing E_ERROR s