The Scottish singer, who isn't known for her strong opinions, revealed she finds it "depressing" that four people are "judging these people and really knocking their confidence".
The Brit Award-winner, reportedly told The Daily Star: “I find it quite depressing. I find it sad that four people are judging these people and really knocking their confidence.
“I don’t think I would have considered appearing on 'The X Factor'... The kids who need music in their lives should just focus on their craft.
“I’d say don’t be in a rush. The pressure they put on kids is for it to happen right now, but your talent will always be there.”
It was recently announced Sande, who enjoyed a series of high-profile appearances during the Olympics ceremonies last year, could pick up a pair of Ivor Novello awards.
Her number two track, 'Next To Me', is in the running to be named best song musically and lyrically after it was shortlisted along with 'Laura' by Bat For Lashes and Jake Bugg's 'Two Fingers'.
The same song is also shortlisted for most performed work along with Olly Murs' 'Dance With Me Tonight' and 'Paradise' by Coldplay.
Earlier this year, Sande scooped the most Brit Award nominations after being nominated for best female and best album, and with two songs in the best single category.
She took home two gongs on the night, adding to her Brits haul that already included 2012 critics' choice.
However, the Ivors - in their 58th year - are more highly prized within the music industry, because they are voted for by songwriters and composers.
They will be handed out at a ceremony at the Grosvenor House hotel in central London on Thursday 16 May.