@ ~$430 for upgrade to double the storage, 50% more RAM and QHD display it made sense. Nearly 7 days later, after all the hours scratching my head... nope.Well your s23 plus is no slouch so I can see why you are holding onto it.
I personally feel like a lot of the issues you mentioned will get worked out with updates or Samsung will have to replace a lot of defective phones with faulty GPS hardware.
I also personally feel like the s24 plus is the one phone of the 3 in the lineup if you were upgrading from the previous model that you would be most impressed with. From full HD to quad HD with better ppi than the ultra. From 8gb ram to 12gb. Aluminum to armor Aluminum, smallest bezels on a phone, bigger battery, new edge to edge flat display, flat edge armor Aluminum frame.
It is a huge upgrade in my humble opinion and every phone I have ever used at initial launch had some bugs. As long as Samsung resolves the issues appropriately then it shouldn't be a problem.
But there are so many reasons and factors that go into a personal purchase decision I can't even begin to assume anything. You have to do what makes you satisfied and if that is keeping the s23 plus then that is the best plan.
I have known friends who keep their Samsung phones until they have a hardware failure, past software support and they just keep going. I think despite Samsung software long standing complaints a good thing is generally if you get a high end Samsung phone they slow down imperceptibly over years. Samsung does a decent job of keeping their phones feel responsive even after years. I am not talking about stuttering or animations because that would be a separate topic but in general day to day use the phones stay quick. So a lot of people keep their Samsung phones like iPhone users do. I think it is a good thing.
So don't feel pressure to buy a new phone. You got a lot of years left in that s23 plus!!
The unannounced gamma correction change I can let past. GPS fail, font incompatibilities and other discretions at this price level are over the top. Dunno what will be next, a few years from now (at least!)... maybe champagne, caviar and Sony Experia LOL