Predictably, perhaps, I blame "mindless exhibitionism" on Facebook and Twitter. Of course, it's been around a lot longer than social media.
There have, however, been Christians with the opposite concern of exhibiting their victories:
For if I do wish to boast I will not be foolish, for I will be speaking the truth; but I refrain from this, so that no one will credit me with more than he sees in me or hears from me (2 Cor 12:6).This is good for Christians to keep in mind. Showboating is stupid and graceless on and off the field. And even more so for children of His grace.