It's more embarrassing than that: For most of the time I used Google Voice, it couldn't even forward MMS. I used Google Voice as my primary number for years, and I had to tell people that I couldn't receive group texts or pictures, which always got me weird puzzled looks.

And of course, now they've removed SMS forwarding entirely, and basically completely made the service useless/redundant. I'm glad I ported my main number out years ago.