Ripping CD’s is worth if it the CD releases you have are mastered better than the very latest remasters for the given album (which I assume is all that is available on streaming). Generally I find specific early release CD’s to sound best. Hence, for old music, I say it is always worth it. Very occasionally I’ll find an early release CD that sounds bad, so then I seek a remaster that sounds OK - it’s never been the latest remaster though, at least so far.
As for hybrid SACD’s, they seem to be case-to-case. I’ve only owned a few, some are quite decent masters, some have been detrimental to the music.
