Totally agree.
I’m an advocate of driving at all times with mechanical sympathy, whatever the age of the car. I always allow the engine to warm up before driving more enthusiastically. That said, I don’t drive sportily any more. ?
Regarding running in, most manufacturers don’t advise the old 1000 mile run-in period any more as tolerances are so much more accurate. In fact, it’s not beyond impossible now, to be building constant blueprinted (perfect) engines. What manufacturers do advise, is to drive carefully for between 200 – 500 miles but some say to add in some of your normal driving style. This is because some ECU’s now learn your driving style and set themselves accordingly but also it allows time for all mechanical parts to bed in to the rest of the car. It’s not just the engine but brakes, tyres and other mechanical parts will need to bed in.
The best thing to do is to refer to your handbook. This will tell you exactly what to do.
? I will be remembered for nothing but had great fun doing it ?