Which he did in Superman II, a movie from which SR is a sequel.
And in SII he didn't leave for 5 years, he simply quit forever. And told no one about it.
Again, the same that happened in SII. Superman quits forever and tells nobody.
And in both SII and SR he did when Earth seemed safe.
Now it is weel explained that if Superman had talked to Lois before leaving he wouldn't have left. That's why he didn't do it. His mission and responsibility to any possible Kryptonian survivor was higher than Lois' (or anybody else's) pain.
Nevertheless Supes told his motehr about it.
Oh, like in every comic book for decades she hgasn't been able to see that Clark + glasses = Superman.
Suddenly, the same kind of traditional cluelessness is a problem. But it is well established that for Lois, Clark is almost unexistant. Many people in Metropolis went away one day and came 5 years later. Lois - as usual - never made the connection.
He was not creepy at all, and if you check the "stalker" definition, Superman in SR doesn't fit.
stalk (FOLLOW) Show phonetics
verb
1 [T] to follow an animal or person as closely as possible without being seen or heard, usually in order to catch or kill them:
The police had been stalking the woman for a week before they arrested her.
Not the case; it wasn't in order to catch or kill Lois.
2 [I or T] to illegally follow and watch someone, usually a woman, over a period of time:
He was arrested for stalking.
Not the case; it wasn't over a period of time, just once.
3 [T] LITERARY If something unpleasant stalks a place, it appears there in a threatening way:
When night falls, danger stalks the streets of the city.
Not the case; he wasn't threatening Lois or anyone inside of Richard's house.
stalker Show phonetics
noun [C]
a person who illegally follows and watches someone, especially a woman, over a period of time:
Several well-known women have been troubled by stalkers recently.
Not the case; it wasn't over a period of time, just once.
What Jason did was to save his motehr's life. Ethicaly you can kill someone if he's threatening your or some innocent person's life.
And about the Jesus parallel, yes, Singer kept what has been a thing associated to Superman since 1939.
Terrible mum. Typical Lois behaviour.
Excuse me? That's the excuse?
If she wasn't making connections between Superman and someone who she couldn't care less (namely Clark) for, then it's plothole. But if she has been idiot enough to not to notice a simple pair of glasses then it's okay because it has been like that for too long?
Have you ever thought that Clark has traditionally been absent every time when Superman is there to be seen (sometimes for a long time when Superman has been in outer space) and yet Lois never made the connection? My man; that is "tradition" too.
So how many comics/movies have you seen with Lois being a mother so we can draw conclusions about her possible behaviour as a mum?
As far as we know, Lois puts always the news before everything and usually in an impulsive and irresponsible way. As far as she knows, it is an old lady who inhabits that house.
Superman in SR, as he did in SII and many heroes has done in many good stories, lost his way.
And Richard is precisely who shows him what he used to be; a hero beyond the super-powers. That's the function of Richard, who Superman thought at first would be the classic pedantic son of daddy.