I've been frequenting the MoBA for 8 years or so, since moving to town. We love the Somerville Theater, and can't wait 'till it can safely reopen. The MoBA has mostly been a place to stroll around with a beer/wine to kill time if you get there early. It's intentionally cheap, tacky and low brow. It changes very slowly.
I'd guess there's only about a 30% overlap between the onine collection and what I've seen displayed. There has often been weird art objects/sculptures besides the wall art.
Quite a surprise to see it on HN.