I find the thought of encouragement more disturbing.
"Come on, buddy you can do it.. yeah, I see that's a big one...." ghasp
"a REALLY big one. I can see it. Push, don't forget to breathe.. yeah, there ya go, pinch it off. Nice! You've changed your diet, haven't you? Good job!"
This would probably be the only option but it would still be difficult because for a start there'd have to be a period of time between discovering it was sentient and getting that new toilet and you'd still have to shit and then there's the issue of whether the toilet can survive if removed and if it wants to or is OK with being move/removed. If not, you'd have to basically get an entire new bathroom to place a new toilet in which could be financially difficult.
I donโt know what show or year even, but when I was a kid I remember some weird sci fi show or movie with people being on a sort of sentient organic space ship, and the toilets were literally this. Living things that would feast on human waste, iirc including going the extra mile of having tongues to lick the user clean.
Since its main purpose is to flush bodily waste, I'd be making it extra happy. Since a toilets' nature seems to be wanting to be clean, it will be very happy with me. My diet produces very easy to process waste.
We'd be best buddies, and I would expect some moaning and groaning. Probably posting about it on their assbook pages.
"Let's build robots with Genuine People Personalities," they said. So they tried it out with me. I'm a personality prototype. You can tell, can't you?"
Soil is kinda sentient...and it doesn't "crave" waste but definitely uses it as food to get healthier so let's do that instead of water sports nightmare toilet collection?
While your toilet isn't alive to crave your waste, the microbes and such at the waste water facility that your crap goes to do in fact crave and need your waste to survive and propogate. It ain't ice cream, but your crap always ends up as food for something.
The more tech we put into our toilets, the more likely they are to become sentient, so this is a serious consideration. I've often worried that the way we treat toilets might be the thing that drives AI into Skynet territory.