Matt Siegel, âMatty in the Morningâ radio host, storms off the air after being warned about Demi Lovato comments By Travis Andersen, Mark Shanahan and Kevin Slane Globe Staff and Boston.com Staff,Updated May 19, 2021, 12:10 p.m. Email to a Friend Matt Siegel, a fixture on Boston radio for 40 years as the host of the âMatty in the Morningâ show on Kiss 108 FM, abruptly signed off Wednesday after being told to âstop talkingâ about pop star Demi Lovatoâs announcement that they are non-binary. The dramatic mic drop, which stunned listeners and sponsors, did not mark the end of âMatty in the Morning,â according to Siegel, who will be on the air Thursday morning and plans to address what happened on the show. âI ainât leaving,â he said in a text.