Dude, Kiner-Falefa has a career wRC+ of 81 compared to Florimon's career 59. And Kiner-Falefa has been better than that recently, posting a 94 and 85 the past two seasons.
And if you like fWAR for defense, Florimon spent most years with a negative fWAR. Kiner-Falefa, as you pointed out, was over two wins last season.
Florimon and Kiner-Falefa aren't even in the same conversation of player quality. And I say that as someone who does not like yesterday's trade.