I think so.
BF1 for example, there is a site that counts the active players, most of them are playing on a ps4.
Considering that battlefield franchise games loses almost 70% of casual players after 8 months, I would buy it for the platform were the most players are.
I would recommend Playstation for any multiplatform multiplayer game, since 60 millions playstation 4 have been sold, the online community may stay great even for the old games.