My point was we had three in 2016. Having 1.5 All-Pros on the line is better than what 90% of the QBs in the league have on their O-lines.
As far as RPOs, any system that is pedicated on your opponent playing undisciplined defense is not a system at all. It won't work on good teams and is not a good foundation for a playoff contender. Yeah, it can ocasionally be done if you have an elite defense that generates turnovers and you get really lucky on offense.
Read option tools can be effective, if a QB can play in the pocket too. Look at Aaron Rodgers. The guy is deadly from the pocket but even scarier when he improvises. That is the kind of QB Dak should aspire to become. He doesn't have Rodger's arm talent, but if he can prove that he can consistently making winning throws from the pocket, he will be playing more like Rodgers than Cam Newton. That is the kind of development we need from Dak.
BTW, the only time a QB running an RPO system won a Super Bowl, that QB had an elite, ball hawking Defense. Now that QB has become a pocket passer. He'd be even better if he had Dak's 1.5 All-Pros on the O-Line and Zeke.