I have (more frequently than I care to think) heard folks argue that Psalm 100:1-2 (“Make a joyful noise unto the Lord, all ye lands. Serve the Lord with gladness. Come before His presence with singing.”) is a perfectly good excuse for execrable congregational singing: off-pitch, raucous, muddied rhythms and lyrics, and worse. Betcha most of those who use it as their excuse for their laziness and lack of care in approaching their worship expressions don’t use the KJV (the “noise” translation in Psalm 100:1) for other things. Other translations focus on joyful shouts and joyful songs. Painfully raucous croaks ain’t what springs readily to mind when I think of “joyful.” Maybe it’s just me, but off-key, or even atonal, grating, muddled, and altogether ugly sounds just do not comprise “singing,” IMO. (And no, “Their heart is in the right place” just doesn’t cut it. If their heart were “in the right place” they’d not submit “sacrifice[s] of praise” that were crap. Just sayin’.)
Of course, much of the problem may be simply because something approaching 90% of people nowadays apparently cannot hear and reproduce pitches with any degree of accuracy. Not my fault: theirs, for playing crap into their ears and pretending it is music, corrupting any possible embryonic musical ability they might have.