It's hard to tell (about your little Yammies) without hearing them. Still, IME home theatre sound is a different thing, with a different purpose, from home audio.
The detail and refinement I get from my main setup is not unwelcome in HT but it's not the point. HT sound is not meant to be the main attraction. It backs up a constantly changing image and is about slam, dynamics and vocal intelligibility. IMHO it doesn't require the resolution of top-notch audio and mostly the gear is not built to provide it.
That doesn't mean many folks can't be happy listening to HT gear. It depends on what satisfies them.