Return to Innocence was played on heavy rotation on pop stations in the '90s and it's not really strange at all when you consider music at the time. It was not like music today.
This was my coming-of-age era and so I am admittedly biased, but pop music today is extremely homogenous compared with that of the '90s, which may be the most diverse music era ever. Enigma, Madonna, Britney Spears, Marky Mark and the Funky Bunch, the Goo Goo Dolls, Sarah McLachlan, Jewel, Vanilla Ice, Hole, Bush, Third Eye Blind, Matchbox 20, Hootie and the Blowfish, that "Mmm mmm mmm mmm" song and "Mmbop," Nsync and the Backstreet Boys, Mariah Carey, Alanis Morissette, Joan Osborne, Melissa Etheridge, Bon Jovi, Enya, En Vogue, the Macarena, Duncan Sheik, Amber, Corona, Eminem, No Doubt, Suzanne Vega, Cher, The Verve, Barnaked Ladies, Counting Crows, Vanessa Williams, Garbage, Fiona Apple, Montell Jordan, Dee-Lite, Moby and so many more were ALL played on the same pop music stations.
Today, there are few different sounds in music and little diversity among voice types and vocal styles. Lyrics are generally mindless and unchallenging.
During the time Return to Innocence was a big hit, it fit in perfectly with the pop music landscape because there were no real borders around what pop music was supposed to sound like. There was no Taylor Swift or Ariana Grande who set a single standard for what all other singers emulate as there is now.