I think with all of the digging that has been done, particularly over the last two or so months, we are able to nail down what Dax is. He is a very basic, self deluded normie failing to pursue the grandiose Hollywood career that never quite "got it" but desperately wants to "get it" no matter what "it" is. And its all really simple to break down.
His humor was always an attempt at being edgy because that is simply what worked for him similar to someone like DSP but, like DSP, its all surface level that requires no thought. Dick Masterson is a character in the same way Phil's DarkSydePhil is. Both of them are not what they put out in the world in that Phil shows his ass like he is tough but is really a coward and Dick is the alpha chad prom king while Dax is really an AV Club nerd. That would be fine for Dax if he understood how to take that humor and be subversive like a Sam Hyde but Dax, at the time, didn't have to be. Screaming at people and making base level jokes about sex worked in 2007 but it doesn't have that same punch in 2020.
This is why you are seeing the Twitter tirades that aren't funny and are ineffective at what he is trying to accomplish. He doesn't get the internet anymore. Look at his interactions with Dispatch and Josh. What did he say when Dispatch showed up? "You are from the internet aren't you?" Look at how he completely did not understand what alogging was when he talked to Josh for the last time. It's why he labelled this site the Karen Farms which nobody finds funny. He doesn't get it. The internet was a very useful tool for him early on but he never bothered to understand it or evolve with it. Again, he is in a 2007 mindset in 2020. The entire culture has changed but he hasn't.
If he got the internet at all, he could have realized that the money he is spending on that house he has could be better spent living elsewhere. Again, this late Gen X/Early Millennial mindset ties in to somebody like DSP. Dax works ONLINE and his career in Hollywood is dead. He has no reason to live in LA except to "dab on us haters in his mansion." He could have bought a very nice 1400 sq ft. home almost anywhere else in the US for a fraction of the cost of his current home and made the same money online. It doesn't affect the work Sean does for him or literally anything else. His career is solely online and he could be saving back shit tons of money but he doesn't get it.
Finally if he got real life at all he wouldn't be fucking it up this bad. If you are going to brag about something actually have what you are bragging about or never let people find out the truth. Why do you think he hid 80's Girls identity for so long? He pumped her up like she was the prime piece of ass but her face look like an aged leather bag. He had to hide that just like the "mansion," just like him rarely being seen from the chest down (keep hiding that gut buddy), just like his hairline. Just like Phil, Dax has been huffing his own farts for too long and is shocked that other people don't like the smell. This all could have been solved if had an ounce of humility in him but he doesn't because he is a very basic, self deluded normie failing to pursue the grandiose Hollywood career that never quite "got it" but desperately wants to "get it" no matter what "it" is.