yup, platoons are virtually extinct.
Mark my words... In the Future... Not only will platoons be something you will have to explain to your grand kids like rotary phones. the bench player will also be gone... the getaway day guy will no longer be part of the 25 man roster.
With each passing year... with improved training, the sport of baseball will over flow with increased numbers of capable talent.
Lefties will hit Lefties... Righties will hit Righties. 25 Man Rosters will have strong talent from top to bottom.
Positional Flexibility will be the thing so Managers can work everyone into the lineup.
That is why I founded the "Baseball Player Positional Flexibilty Club" in April of 2016. Just two members so far but I expect there to be a rush from the next generation.