Best wishes to Kiriloff in his next endeavor. This has to be tough.
He's certainly had some injury issues and it's absolutely his decision, but a surprising one for injuries that would not normally be considered career-ending at age 26, individually or even cumulatively.
The modest, somewhat muted 'Bummer but whaddaygonnado?' fan reaction on social media, by contrast, seems pretty unsurprising in light of the Twins organization's recent trajectory and its decade-long run as the place top prospects' hopes go to die.