Actually, according to UNCLOS, there are no different between transiting and conducting military operation. China can hold a military Drill in US EEZ as much *** the US having the same right to hold a Military Drill in China EEZ.
The definition of "Rules" is that it Applies to EVERYBODY and no one was in exception.
Even the US observe this "rules" even tho the US has not ratified the UNCLOS.
The problem with what you and most Chinese thinking is, since China wasn't "Around" when the rules was set, the China should not by all account respect and obey the rules and instead having their "Own" set of rules.
Well, I did not say China cannot do that, but you cannot do that and say China is not escalating anything. You can change the rules by having it heard internationally, and then when all other party agree to and ratified the amendment, then the rules can be change. You cannot unilaterally change the "rules" when you deem fits and call other aggressive. When you change the rules unilaterally, you are the party that act aggressively.
Baseline is, if you don't play nice, you automatically refused the right to call other foul.