One Samsung soundbar at least alluded to it's volume being linked to the tv remote. Which makes the simplicity factor appealing. And one less remote cluttering up a tabletop to reach for.
That's actually a common feature among soundbars so don't let that be your main selling point! I don't know why DVRs, Blu-Ray Players, and other gadgets weren't designed that way too. If you happen to find a soundbar that doesn't work with your TV remote, just buy an all-in-one remote for a few bucks and program it so it controls everything.
I think mine is a Yamaha YAS-209. The sound is great, but I don't think you'd like it because it works with Alexa and if I remember correctly you aren't a fan of smart speakers.