There are good options out there for $1,500 or less. Cannondale Topstone 4 is a good example, it has mechanical disk brakes which is great for off road camping, or on long road journeys because less tools need to be carried to fix them and their easier to fix then hydros. While it does have lower grade Microshift components, but you can always replace them with better components when they fail, but they'll last at least 5 years. This bike also has quite a few fasten points to put frame bags on as well as strap stuff to the fork. This bike sells for less than $1,200; it's made of aluminum and weighs around 22 pounds.
Another better option, but does cost more, is the Kuna Sutra, it will run you $1,600, but you get a lot more for that extra money vs the Cannondale, there will be no need to buy a front pannier rack or fenders because it comes with them, so those items alone will save you roughly $200 that you will have to spend to get on the Cannondale. To save money they recently went from Shimano Deore to Microshift Sword, which is a better derailleur than what Cannondale uses. This bike also has a lot more mounting points on the frame and fork than the Cannondale. The brakes are a hybrid mechanical/hydro system, the fluid is contained in the brake caliper with no hoses going to it, instead a cable goes to it, this reduces leakage by a lot over pure hydro brakes, and they are easier to fix but they still might have to be bled on rare occasions. The maintenance difficulty is in the middle between full hydro brakes and full mechanical. The Kuna is made of steel and will weigh about 32 pounds.
The Cannondale is the better buy price wise, but the Kuna has more features and comes with higher end components, the Kona has more growth potential for adventures because it can carry more weight, in other words, with the Kona you'll have more flexibility and less restrictions, so over the long run the Kuna would be the better bike.
If you want more of a faster gravel bike and don't care as much for doing camping on it, then go with the Cannondale, but if you want a bike that can do it all and do it all well then go with the Sutra.