Aside from your neighbors, I found it also matters if you can hear the noises yourself. Most servos don’t sound great and can get pretty distracting against more immersive content (such as vr and audio-based). PMVs mostly doesn’t matter.
If noise is a big concern my recommendation is to consider BLDC toys such as the SSR1 / SSR2, FunSR Pro, and perhaps the OSR2+ with quality servos. These are quiet enough that you yourself can ignore it through noise-cancelling headphones.
I looked up this “SR6 Midnight Steel” and I think they may be the same thing as the FunSR6, just listed on different platforms. It’s also manufactured by FunOSR and the pictures looks the same.
I have done a review of the FunSR6 before with a sound test: 🔬 [Review] “Silent” SR6 From AliExpress: How Quiet Can It Be?. In my house it couldn’t be heard through the wall but can be heard through the door.
Maybe take up a crafting hobby and if your housemate asks, just show them your hacksaw.