Good day.
Neither Amazon nor Digital Ocean do not drop Centos 7 and Centos 8 images yet, so there are no reasons to bother.
We raised the ticket WCS-3208 to check Centos Stream compatibility.
In theory, yes. The full list of tested platforms are:
Centos 7 & 8
Ubuntu 18.04, 20.04 (it may work enev on 16.04 if glibc is updated)
Debian 9, 10
Fedora 29 and above
Amazon Linux, Amazon Linux 2
So WCS should work on almost any x86-64 Linux with glibc > 2.14 and Java 8, 12, 14, 15 installed.