I have never owned an Equinox but I own a 2015 and 2023 Chevy Traverse so it's basically the next larger SUV model in the Chevy lineup. Bought both brand new, when we bought the 2015 model we test drove the Traverse, GMC Acadia, Buick Enclave, and a Ford Explorer. Ruled out the Explorer right away, it rode rough as hell we thought. The Traverser, Acadia, and Enclave all are essentially the same vehicle but as you go up the chain add about 5-10k in price as they are basically the same engine and chassis but with more bells and whistles for features it felt like. The 2015 Traverse now has about 127k on it and probably is the best vehicle I have ever owned as we haven't dropped any major repairs in it and has been pretty much problem free other than your usual wear and tear maintenance for a vehicle of that age and miles. The 2023 Traverse we have just over 26k on so far and I really like how it rides. It comes with a lot more standard technology features than the 2015 did for it's time. We bought both with pretty much the bare standard options for the AWD LT model.
My in laws have drove a couple Equinox and Traverse models over the years and never heard them complain about problems with them. I do think a lot of how opinions are formed on vehicles is how you drive them. Some people neglect the maintenance on them or drive them hard. Also a big difference on what kind of environment you drive them in, is it mostly city driving, highway, type of climate, and gravel roads also are rough on vehicles too.
It's always interesting to compare car maintenance stories with my dad. I do mostly in-town driving in the DM metro area so a lot of stop and go driving mixed in with some longer highway trips when we go on trips outside of town while he lives on a gravel road so drives on gravel and county roads just to get to town so has more miles on his cars but less stop and go driving. The problems I have with my vehicles compared to his are usually different as the type of driving we do are harder on different parts.