Most cars on the road have had some sort of paintwork done on them, even brand new cars off the dealers yard can have paintwork done to them prior to being delivered as brand new although usually not with replacement panels. So to find a car of this age which hasn't had any paintwork or panel work will be very very rare indeed.
If the repair is done well which is evident here in the RAC report and as indicated the damage before repair wasn't structural and you can't see anything major wrong with it i.e. poor paint colour match, misaligned panels etc. then I wouldn't be too concerned about it. If the damage was minor i.e. new lights, wing maybe bumper and the repair is off good quality then at this age of the car it won't affect the resale value either. Different matter if the car is an appreciating classic with just 10,000 miles on the clock with all original paint and panels for which you will pay a premium and then you go prang it and have it repaired in which case the value will take a knock.
These inspections reports sometimes can put people off what is basically a good car, by making it look like something is a bigger deal than it actually is. The other thing with these reports is most of it is based on a visual inspection since they aren't allowed to take the car apart to give a proper look over.
Years ago when I was trading cars I sold a BMW 5 series to someone who had an inspection done and the inspector that came around told my client not to buy the car because it had some minor paintwork on the front end (similar to this situation) and they also tried to tell the buyer that the car was worth around £1000 less then what I was asking (on a 5k car) due to the repair work, yet what I was asking was the cheapest on Autotrader at the time and below market value. My buyer wanted to buy the car but tried to haggle me down on price due to what the inspector had written. In the end I contacted the inspectors boss and ask him to find me the same car at the price they thought it was worth and I would buy every single on of them if they could, in the end they apologised and went back to my client and told them what I was asking was fair and to buy the car. That idiot inspector tried to tell me the all cars sold on main agent forecourt do not have any paintwork which is totally false. Needless to say I told that chap's boss that that particular inspector would not be allowed on my forecourt ever again!