With the understanding context is going to vary for how much time for observation and alternate commands to be given if you claim an injury (ie, active shooter scene with multiple reported gunmen vs a you're alone in a parking lot a few blocks away from a robbery that just occurred and happen to meet the description) remember thugs lie about physical limitations in order to buy time to look for escape routes or plan assaults on officers. Sometimes just because they figure it'll make the arrest more comfortable. They don't want to sit on the cold ground so they just had knee surgery. They want two sets of cuffs so they just had shoulder surgery. The vast majority are not being truthful. Human nature says when the last 90 people lied to you, it's hard to empathize with and believe #91.
Also remember auditory exclusion and cognitive loads. The brain has limiting computing power. The active shooter scenario demands much more attention then the lone suspect in the parking lot. In the second instance you are more likely to be heard and be understood. In the first there may be so many things going on and so much attention switching that the brain won't take the time to process auditory input. Your claims of not being able to comply may fall on literally deaf ears.
So, in some circumstances, you may be given quite a bit of leeway and alternate commands might be used to work around your claimed limitations. In others you may want to ask yourself "can I get on my knees if my life depends on it" because it might if another armed good guy (LE or not) has decided your a potential bad guy and has you at gunpoint.
My broad recommendation is to evaluate the state of the person giving commands. If they are running right at the edge, I'm keeping my mouth shut. I'm not adding to their cognitive load and I'm not going to throw anything into their OODA loop that I can avoid. Two way conversation takes more brain power. Adjusting to non-compliance when compliance was expected takes brain power. Someone operating at 99% already who's pointing a gun at me, well, I don't want to push them further. If, however, they present as in control of themselves and capable of a bit more load, then I'll comply and ID myself or otherwise verbally engage.
Speaking of OODA loop, not being caught in one yourself helps immensely. Hopefully you will know the police are coming and won't be surprised by their presence. Maintaining a calm demeanor yourself, not being armed or in a fighting stance upon their arrival, etc. will put "good first impression" on your side and that helps put their subconscious mind on your side as well. Remembering the subconscious may be driving a lot of the show it the conscious is overwhelmed, that's a good thing.