1) Wrong. Don't throw out the baby with the water, and outliers will ALWAYS exist.
Now it would be very remarkable if any system existing in the real world could be exactly represented by any simple model. However, cunningly chosen parsimonious models often do provide remarkably useful approximations. For example, the law PV = nRT relating pressure P, volume V and temperature T of an "ideal" gas via a constant R is not exactly true for any real gas, but it frequently provides a useful approximation and furthermore its structure is informative since it springs from a physical view of the behavior of gas molecules. For such a model there is no need to ask the question "Is the model true?". If "truth" is to be the "whole truth" the answer must be "No". The only question of interest is "Is the model illuminating and useful?".
2) How you should use analytics... close but not quite right.
You use a more Bayesian style thinking with priors and data. There's reasons why the model suggested these things. For example: with Morrissey it was because it doesn't have a "did your father pass away" input.
With Suzuki, it's still meaningful that he comes out as not a great bet to reach those numbers, that people who have performed statistically like him historically do not perform to that AAV.
It doesn't mean he will fail, but it's still meaningful, and you should adjust your prior beliefs, at least somewhat, because of it. How much you adjust will be based on the strength of the new evidence.
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I do think Suzuki has enough upside that he can be really good... but look at two entirely other models... I'd be concerned about the fact that he has a high GAR (which often correlates with F contracts highly) and a very much less impressive xGAR (which is more predictive of how good a player will be in the future and likely then is better at evaluating true talent).
Again, not saying Suzuki won't end up a stud or at least good. But it's something that he crashed in 2way numbers as soon as he didn't have someone taking all the tough match ups for him AND that his underlying numbers have some red flags.