It's not "Rouge"... That's makeup.
This is the major limiting factor for Divine Soul Sorcerers... Yes, they have access to twice as many spell options. But they're still limited in spells known, like all Sorcerers. So they're not as versatile as a true Cleric, but are still a good option for certain specific builds utilizing certain specific spell options.They are solid and probably one of the only sorcerer origins that I find alluring but they double down on the core issue all sorcerers have with spells known.
That are great at purpose built focuses like buffing but are fairly rigid.
In practice, most Divine Soul Sorcerers I've seen have merely dipped into the Cleric list for a few choice spells, rather than trying to be a true spontaneous-casting Cleric and taking primarily Cleric spells.