Sure, but no one does it to the extent of the US. I'm not aware of any other country where spending on wars, nuclear weapons, and benefits for soldiers are so often omitted from the quoted military budget. The US VA's spending alone far exceeds China's entire military budget and is ~4x the defense budget of Russia. Somehow, the supposedly independent western MSM and research institutes always fail to point this out.TBF these sorts of things go on in all many countries seeking to artificially inflate or reduce their military spending headline figures.
On the other hand, China's official military budget is actually overstated in some sense as the PLA is tasked with many responsibilities that are not directly defense related, most notably disaster relief, poverty alleviation, and infrastructure construction in remote areas.
PAP (People's Armed Police) is tasked with domestic security and law enforcement. If we count such activities then we would have to include domestic security and law enforcement spending in the US as well, which I expect would again be far higher in both absolute terms and in relative to GDP terms than that of China's.You could argue that PAP and China Coast Guard should fall under military spending.
Regarding the Chinese Coast Guard, they are limited to dealing with civilian vessels and activities in China's coastal waters. In contrast, the US Coast Guard has deployments all over the world, from the Persian Gulf to the South China Sea, and carry out missions that have nothing to do with domestic maritime safety. In fact, the US Coast Guard actively participated in every major US war since Desert Storm, including deployments for military operations in Afghanistan, a landlocked country! Since the US Coast Guard has took part in more wars in the last 30 years than the military of most other countries, it would be quite hard to argue that they are not an arm of the US military.