Painting with such broad strokes is fun.
You are making a broad stroke statement about Tesla design being crappy and got one in return. Data here has shown that a 1.7 overstacking has losses on the order of 2% depending on all the factors.
For that approx 2% less kWh production, your Tesla system probably costs 10-30% less per installed DC watt than many competitors. It seems like the biggest issue is the old school thinking that flat topping your production curve is some big issue.
It would be easier to understand this if systems were sold according to the specific yearly output in kWh, and nobody really knew the DC size. Selling based on DC sizing of a PV system is like buying a car based on the displacement of the motor only, without understanding the horsepower which would be affected by turbo/supercharging, fuel injection etc.
For instance head over to PV watts and test a few cases. If you have a 10 kW system with a 1.2 vs 1.7 DC/Ac ratio, the production loss in a year is at most (with perfect azimuth/tilt) 300 kWh, or a value of $120-140 at my electricity prices. So assuming the system lasted 25 years (Inverter will probably last 15 years if taken care of) the total value of the energy not harvested due to flat topping is something like $3500 or less.