The show isn't set in 2025. It's set somewhere between 2000 and 2003, hence the Fight Club reference in season 4 (iirc). Traffic cams were much less prevelant then, on top of the fact Jimmy does the deed halfway between two traffic lights, when he stops to dump Wendy the hooker, on a relatively small road, not a boulevard.
Even though Jimmy has a criminal record in an another state (Illinois), he doesn't have one in New Mexico because of the pre-prosecution agreement. Any which way, Howard would need to either hire someone to snatch Jimmy's fingerprints to make a match, or do something illegal to gain access to his criminal record and prints, which is out of character for Howard. It's also relevant to mention that despite the stoic facade and fake smiles, Howard is actually very emotional (we see many scenes developing this). He's also in the midst of a sorta-seperation with his wife and consulting a shrink, so we know Howard is in emotional turmoil at the time of the prank and since it's Jimmy, with whom he also has quite an extensive history with, Howard isn't thinking clearly. It's personal. It goes back to Jimmy spoofing Howard's looks on the billboard, Jimmy pressuring him to settle Sandpiper, Jimmy pulling the address scam on the Mesa Verde files, sending the hookers at Forque's, the bowling balls on his car, the 'bacterium' Jimmy blowout when Howard offers him a job (my avy), and so much more.
Better Call Saul is about attention to details, and if you remember all those tiny character development that add-up, everything was set-up properly.
Deserved much worst? She created her own little hell. Look back at her interview with Schweikart (the formal one, not the informal one with the Russian mules). and she mentions where she comes from and why she moved to ABQ. She loathed the small town destiny she had. That's exactly the life she created after leaving ABQ. Small town, boring husband, boring job. She also came clean and was ready to live with the consequences and she also started doing pro bono work to redeem herself. It's never said if she was sued by Howard's wife either, which would've wiped her clean of any money she'd have.
My only true problem with season 6 is how stupid Jimmy is at the end of his stint in Omaha. He breaks his own rules to steal the cancer guy and makes mistakes on top of mistakes from that point on. His arrest was a bit forced. Still, it gave some incredible moments, like when he's confronted by Jeff's mother. For a short moment, you get the feeling Jimmy's gonna cross the line and strangle her to death. He doesn't, even though not killing her majorly raises the odds he would get caught. So your whole qualm about morals is undeserved. Jimmy didn't cross that line, because he does have empathy and in the end wanted to be Kim's knight in shining armor because he still loves her.
She's the love of his life. It's not about morals. I thought it was obvious.