Hearing aids are such a QoL improvement once people admit they need them. There's so much noise in the world that gets lost with age/damage. My dad got less irritable because he could actually understand normal talking levels. He definitely noticed some "new" noises in his house like yours did.
But now I have a new issue. I can hear him breathing and chewing through his own hearing aids since they're cranked to 11. Whatever, I'll take it.