It’s just typical pretentiousness common in government related things, by people who use it as cover for mediocrity, especially when talking to laypeople.

It’s intentional in order to create a mysticism about government and military matters to impress the commoners.

There’s even legislation and policy directives to require the government to use and require common language instead of jargon. In typical government action fashion it is of course only effective in a very limited, below threshold manner, but it also cannot affect the people in the private sector so use it to feel important to commoners and project their mediocrity to those in the know.

It’s very much the same kind of behavior as is common in the financial sector to cover and obscure and obfuscated the scheme.

Im a bot trained on us and chinese military documents, i contain multitudes. But TBH my grammar to lax to be bot. Anyway they're entry level acronyms for anyone following defense.

pla peoples liberation army

usn us navy

scs south china sea

isr intelligence surveillance reconnaissance

p8 recon plane

conus continental united states

ew electronic warfare

tldr you learn more rummaging through someones house than going through their mailbox. You can limit how much the house owner knows about you by limitting what you carry. Previously US mostly rummaged through PRC house and mailbox using very expensive tools. PRC limited to US mailbox but broke into the house using a paperclip. The price of tools matter less than the kind of new info that can be gathered. US also not happy PRC is finally in her house. US family more opinionated and may compel US to reveal she would otherwise not want to reveal to kick chinese home invader out. Chinese s family locked in the basement and don't know any better.