You need context. And the sample is massively against your case.
Look at Tampa's playoff record during the course of the Yzerman regime. You'd realize they went to the conference finals in 2011, went to the Stanley Cup finals in 2015, and were in the conference finals again in 2016 and 2017. That's 9 playoff round victories leading up to the Columbus series, so they had won "something." There's no equivalence to the playoff failure that Toronto has experienced under the Shanaplan.
As far as Point vs Marner, Brayden Point also had a 16 point in 17 game rookie playoff debut in 2018. That's a 21 year old on an ELC punching well above his weight and proving big game abilities right away. It's what makes him special. The Columbus series was just a 4 game blip in a 50+ game resume that is sterling.