Granite Sink Cut Wrong?

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I would think by the quality of his work it may have looked a lot worse following the sinks extra radii, if he can't do simple internal corners, adding another 2 and 2 externals would look just as bad.

Did you ask for the drainer grooves on the left, usually they are on the small bowl side?

I would also be looking at how it is stuck to the quartz, ie just clear silicone and a prayer.