Then it's also Joseph who gets in trouble for violating his parole agreement by not having a fixed location he can be reached at at all times, if he claims to be living on the streets
or
It's Jonathan who gets investigated for apparently paying for the place Joseph, who has 0 income, stays at
or
It's Joseph who's now a wanted fugitive for disappearing when he has a Criminal SIN, bounty at all, which means he doesn't just have to worry about being linked to a crime, but about anyone recognizing him - and that includes nosy Mrs. Parker from apartment 5B, who regularly checks mugshot websites because she fears for her grandchildren.
Yes, Joseph would be violating his parole, just like every shadowrunner would be unless they let Lone Star watch them as they go commit crimes with their team. So your first and third points would naturally happen to anyone who had Criminal SIN, because seriously, they would not be able to function as a runner if they told the authorities where they stayed at all times and allowed them to be monitored. This will happen regardless of any taxes being paid.
"Jonathan" would be investigated eventually no matter what, regardless of paying taxes. That's just the basic nature of having a Criminal SIN. They find evidence at a crime scene that matches with Joseph's biometrics. They begin looking for him (though only if he's worth the trouble). If he's stupid enough to still be telling the authorities where he lives while still committing crimes, they'll find him and arrest him. That will happen to a National SINner too, if they don't detach themselves from their previous SIN.
Your comment about them all going poof if they're attached to Jonathan is legitimate, in that it doesn't make sense for them to not all go poof when it's burned. But that doesn't automatically mean that they must still be attached to his criminal SIN, because that doesn't make sense either. I accept that as an abstraction. In fact, the entire "Lifestyle" section is an abstraction. Paying taxes or not paying taxes does not change anything, and as you pointed out, it worked fine in 4th edition. I do not see any justification as to why it would apply to runners when every section it's included in has it among the same lines as examples of what
normal, law-abiding citizens do, which runners are not and can't afford to be. Your character does not tell law enforcement where they live and allow them to monitor their lives.
That would not work out well.The National SIN quality would take 15% of your money for only 5 Karma as well, and I really have more faith in the designers than to assume they didn't think "losing a noticable portion of your cash forever and being more easily tracked for crimes" was worth
less than "Your character pretends to be an elf but isn't really." Elf Poser is 6 Karma.
"The main drawback to having a legal National SIN is the character is in the system." as it says. Not hindering the advancement of three archetypes.
And again, if it does, why do runners not have to pay taxes for their fake SINs? Surely that would cause all of the same problems it would cause for someone with the SINner quality. My guess? Because money is important for advancement and you don't need to complicate things by adding tax payments to the game.
Sorry, my tone is very edgy. This for some reason really really annoys me, so I'm very motivated to defend my view of it.