Marshall Solid States have more or less always been at the very least usable. I've had a Mode Four head and an AVT150. Neither was fantastic, but they weren't nearly as bad as people make them out to be.
I think the thing about the cheaper Marshalls is the first thing they skimp on is speaker quality and cabinet construction. I bet if you ran an MG head into a 1960TV cab something nicer and high-end, it'd sound surprisingly good.
If you use their matching cheapy MDF undersized cabs loaded with speakers with puny magnets... yeah. I bet even a Wizard would sound shit into those.
They've been doing that for a while, TBH.