Yes, Tesla paint is not great, but I find it to be average, not the worst. I plan to do the front as soon as I can, because I have done it on another daily driver and saw what a huge difference it makes.
It is also about pride of ownership. If you plan to sell the car in a few years, maybe you don’t care, though resale value might improve if it looks nicer. It might be less expensive to repaint and hope it matches or just accept less for the car. If you plan to keep it, you essentially amortize the cost over the years. Again, this only matters if you care about how the car looks, how often you drive it, city versus highway, etc.
I like cars and I love this one, so I enjoy looking at it and want it to look as good as I can keep it. If I could afford it, I’d get the whole car done and maybe change the color at the same time.