As I said, this guy is going to jail for a long time... The only way I know of to acquire a property legally via this sort of thingis via adverse possession which requires someone other than the owner on the title to LIVE IN THE PROPERTY AS THE OWNER OPENLY, paying the taxes and engaging in upkeep for a very very long time, 20 years or more in the states I looked into in, and the true owners doing nothing to remove them or exercise their ownership rights. Then and only then can they file adverse possession motion.
A quiet title doesn’t give anyone any possession, it’s something you do when a title is found not to be clean, it gives anyone with a claim to a title a certain amount of time to come forward and if they don’t the court will declare that any previous claim to the title is now considered null and void, but this process takes time as well, you must file the paperwork, post notices in news papers etc etc etc, and finally gets approved by the court, you can’t just file a piece of paper and claim its yours.
This guy should be facing even more charges than listed.
I recall a case a while back from Boulder, Colorado. Someone started using part of his neighbor’s back yard (it was a large piece of property) and the property-owner didn’t notice. The intruder then got a judge to rule that that part of the property was now his because the property-owner had not done anything to prevent his use of it. I think the judge was a friend of his.