Yes, the claim is largely true. Adele has never featured another artist on her core studio albums (19, 21, 25, 30). Her work stays almost entirely solo.
Why? Her songs are deeply autobiographicalโshe writes and sings straight from her own life, heartbreaks, and growth. Features would break that raw, personal thread. Sheโs turned down tons of collabs to protect it, values the album as one uninterrupted story, and still crushes it solo. Pure artistic control and authenticity. Thatโs part of why sheโs so respected with minimal drama.
She couldnโt believe she lost all her spark after getting pregnant. She was so confident that motherhood wonโt take her spark but thenโฆ. Wait for it ๐