While I need to update it with more 'severe' examples, I did put together a quick web page last year to demonstrate that what I post does not come out of camera like that. Not even close on a lot of my subjects.
http://www.cjcphoto.net/beforeafter/index.html
I did not shoot in RAW mode until I got my RX100, but since then I've made good use of it.
It's important to realize that I can get away with this much processing because I typically shoot at low ISO's where I have maximum dynamic range. And the dynamic range of a D810 or D850 at ISO 100 is incredible.
It's also (very) easy to see a lack of dynamic range in an image when you process it, because it just looks ... harsh. Usually I am unable to properly bring down highlights, and at the same time I already have some noise before bringing up shadows, and I'm unable to achieve a truly good white balance. Almost always when shooting wide angle. With macro I'm usually controlling the lighting completely with strobes (and can shoot at ISO 64 as a consequence). This sort of loss of dynamic range affects me very quickly - I have lots of troubles post-processing my ISO 320 wide angle shots.
When shooting at base ISO, I don't necessarily pay a lot of attention at getting exposure just right in-camera. (Partly because I'm still learning how to deal with manual strobe power adjustments rather than TTL). I just glance at the histogram to make sure I've not blown a highlight, which I can't recover from. I have more issues with blown highlights in reflective corals than underexposure I can boost in post.
But if shooting at ISOs higher than about 200, I really need to nail the exposure in-camera so as to reduce shadow boosting and highlight pulling as much as possible.
Adjust your expectations, but at least shoot in RAW. Here is a good example. This shot was out of camera with no adjustments applied in Lightroom.
Typical out of camera shot at ISO 400, F8, 1/200th. Decently exposed though.
Their is no way to take the above JPG and turn it into my finished image (below). You need a RAW file to do this much adjustment.
After cropping and getting white balance right, plus other adjustments:

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Phoenix Arizona Craig
www.cjcphoto.net
"In theory, practice and theory are the same. In practice, they're not."