That’s because TV’s no longer come with decent audio because they are made as thin as possible for whatever reason.
No surprise, a wide screen tv from the late 90s was big enough to house 2 gaint speakers and a subwoofer.
And took up half your room, and weighed 800 lbs, no thanks.
My dad’s place still has a gigantic plasma TV from 2000 that takes up maybe 1/3rd of the room it’s in. Great picture, great sound. Completely impractical.