Per company government acquisition "bans" are stupid for PR and security reasons. Brand-specific banlists are whackamole when the same hardware and software will be immediately duplicated with another cat-walks-on-keyboard brand name that will disappear within a year.

Instead, there should be in-depth, enforced audit, compliance, and evaluation standards for gear for particular purposes. If it doesn't meet particular standard(s), then it can't be purchased or used.