revolting
disgusting
carnage
LR 2015.12
You still have a lot to learn about processing raw files before you can pass this kind of judgment, especially if this thread and the one you linked to represents the state of your knowledge after using Lightroom for at least the past 4-5 years. You got some useful answers in the previous thread that pointed you in a few good directions. You appear to have ignored them and stopped responding. That's a shame.
Read up on color profiles: creating your own, using Adobe's, and using Adobe's camera-matching profiles. Read up on default develop settings. Read up on JPG previews that cameras embed in their raw files and how they obviously will differ from the rendering a 3rd-party tool can provide. Read up on how to actually process a raw file, including achieving your desired colors (ever use HSL? or even the saturation slider?), rather than just opening it and then looking at your screen in frustration. Hint: viewing it in RawDigger (!) and then wanting to export that rendering is not "working" on a photo.
Do your homework and stop hysterically blaming your tools please!
Sounds like you could use some instruction that's beyond what a forum can provide. LuLa's own Michael Reichmann did an excellent
LR video tutorial with Jeff Schewe back in the day. George Jardine also has an excellent
Develop panel tutorial series.
And if you still really passionately prefer the camera-generated JPG preview embedded in your raw files, you might just want to shoot JPG from now on. Not trying to be snarky. Just keeping it real.