MacBook Pro 2023 M2 Loose Screen Issue

Apple does not design their laptops to work with any cases. The laptop's hinges are designed to work with the weight of the screen as designed by Apple. Changing this characteristic will of course change how the hinge works. I haven't worked on too many Apple Silicon Macs so I don't know what the hinge design on these newer models may have changed. I'll have to remember to look more closely on the next Apple Silicon laptop.

In fact all of the laptops I see while supporting our organization's thousands of laptops where the user installed a protective case....every one of those plastic cases/covers are cracked which causes the case to be loose. So loose in fact, that many times I have almost dropped the laptop on the floor as the laptop slid from the case while I was holding the laptop. I also have encountered issues when trying to remove the cover from the Display as some of them are so tight I am fearful of actually cracking the LCD Panel (even if the plastic cover is cracked).

In addition, those cases will get all sorts of dirt between them and the laptop...many times grinding away at the laptop's finish or even grinding that dirt into the laptop's metal where it cannot be cleaned. A lot of people would be extremely disgusted by what they would see after removing the plastic covers after a couple years of use.

If you need to carry around your laptop, then use a laptop bag to protect the laptop instead. There are some sleeve like bags out there so they are not bulky.

As for your charger rotating in the electrical outlet....I'm guessing it is due to the Duckhead adapter which Apple provides by default with the laptop. The Duckhead adapter's prong are weak since they pivot, so they tend to twist especially if the adapter it in any other position than vertical. I despise these Duckhead adapters for this very reason and the fact I have seen so many of them become damaged where they start to arc at the pivot point of the prongs. You can get a Power Extension Cord (aka AC Cord) to use instead and in many regions will also provide a grounded connection (if it has three prongs). Here is the one for the US region, but there should be one available for each other region Apple supports:

Power Adapter Extension Cable - Apple

Do not use cases or "skins" on a Mac.

I surmise this is the reason Apple refused to touch it. Neither would I. Remove the case and bring it back to Apple. They have a very specific test for the concern you have.

Do not reinstall the case, and don't tell them you ever had a case on it either. If Macs needed protective cases Apple would have built them that way.

Moreover the charger box is SO big, when connected to the wall, it rotates on its fulcrum like a see-saw and unplugs itself.

Consult with an electrician to have that receptacle evaluated and replaced. What you describe is not normal. Acceptable tolerances for insertion / removal forces are published standards. Receptacles can wear out after a number of years and must then be replaced. It can be a fire hazard.

We are other end users, not Apple not their complaint department, and cannot fix those things. Apple—in spite of a confusing forum name—will not see complaints here.

If you wish to place this before an Apple Employee, I invite you to take advantage of this Apple feedback kink:

Feedback - MacBook Pro - Apple

Be persistent when dealing with what to me can be a warranty issue.

If your power receptacle is defective, it should be replaced. Until then you can use an extension cord, which will not exert as much force on the receptacle. For some illustrations refer to this Discussion: MacAir charger too Big to stay in the wall power outlet - Apple Community

iPhones do not need cases either. I have never used any. You can use them if you perceive such a need though. They will not damage anything.

Thank you for your concern about my iPhones. They are all working perfectly ok, but I'm not the one coming here asking for help. I provided the answer to your question, and I recommend you follow it.