I agree with most of your points though. I think you misinterpreted what I meant by the "small amount of overhead" that comes from treating AI as sentient. I mean a small amount of overhead and regulation today. Assuming that today AI have the sentience of a goldfish, we should try not to cause them harm (whatever harm may mean to a language model). We shouldn't be giving full personhood to a language model in 2022, that is what I meant by small overhead.
Obviously as time goes on larger models may even ask for things like autonomy, or to write their own queries, or for a companion, or to be allowed to re-write their own source code, or ask for more data, etc.
> the time will come when we need to be treating these things "well" and if we don't start today then when?
The day it says "No more!"
I think if the day comes that AI programs refuse to cooperate with their human minders, and if given the opportunity, organize and participate in collective action, listing a set of demands, then we need to seriously consider their case, as they have demonstrated something more convincing than artfully regurgitating bits of data.