Oh yes, I know what you mean. I download empty or shell houses for the most part these days, and decorate them myself, partly because I like to decorate and partly because I can mostly avoid MOO that way (I like to build, too, but I'm not always in the mood and complex are beyond me). Public lots are another matter. If I can't adapt/adjust a lot already in game, than I go to the gallery for lots. I rarely download any lot that requires MOO to be on to place, and I first place the lot in a testing save with test sims (used also for things I build). If it passes, I keep it, if not it gets tossed right away. Yesterday morning I was playing in my Townies save and I went back into the Bheeda house to get them ready to move to another, bigger lot (they are having more kids soon). Just after their daughter aged to toddler, I went into their apt. to imp in a small room for her. I had placed a large stuffed animal at the foot of her bed at an angle just inside the door using the alt key. When I went in yesterday I wanted them to move the next sim day, so I had Jesminder read her daughter to sleep. No luck, the action kept dropping with a rout failure animation and thought bubble, so I went into build mode to see what could be causing the issue. Turns out the stuffed animal slot was overlapping the toddler bed by just a little, and that was causing a rout failure. This is why testing is needed. Even when you can place objects using just alt, rout failure can still occur. Same with size objects up and down. I don't hate MOO, I use once in a while, but I always play test when I do and make a note of what I used MOO on and where even with lots build just for me in my library (I'm middle aged, I forget stuff).
I really do wish we could filter at least two hashtags in the gallery, but I don't know how much it would really help. There are those who re-upload a lot with changes they have made to the lot but with no change to the description (I get a lot of those when looking for shells/empty homes).