Overall I’d not be concerned. It’s not overly professional of them to fill it to there, however I often drop in 6 1/2 to 7ltrs on oil changes. Puts the level about where it is in the second photo.
The worst that would happen is the crank will aerate the oil a bit or very worst is a bit of white smoke. Just drop 500ml out and it’s all good. I’ve never had an issue.
Power losses etc can’t be attributed to some extra oil.
As much as it looks like you’ve had an uncool ride with that Dealership, you seem to be anxious around things which will easily be clouding your rational mind from managing the situation. Anxiety sucks. Over thinking and your mind creating situations that don’t exist to substainiate the thoughts and feelings created.
It’s rational and fact based thinking that will see you through it.
No harm will come from things. You can drop a liter yourself and top up to something you feel comfortable with. That won’t affect your warranty.
Or just be calm on Monday and ask them to get the oil level right (as they should have done the first time) for you. No point being emotional or irrational with them because they won’t be as willing to help you regardless wether they over filled it or not. Nothing wrong with being assertive and disappointed in them. That’s fair enough.
I’d just do it myself and be done with it.
Good job checking the oil afterwards. I helped someone replace an oil sensor and they just paid to have an oil change at a Bridgestone Service Centre. Guess what was still in the car? Yep, old oil that was never changed.
