The data doesn't support your assertion that he's 'either very much on fire or cold'. In 74% of the 22 games this season in which he's taken a three he's shot 33% from deep or better. In 52% of those games he's shot 40% or better. He has four games where he's gone 0-for, going 0-2 once and 0-3 three times.
That wasn't the case last year, where he shot 25% or worse in 16 of 35 games and 40% or better in 12 of 35 games.
Yes, he's consistent enough that as a defense, you have to stay in his face all the time and not help elsewhere. That keeps double teams off other guys if not Zach
He's still overmatched physically at times, but is a much better team defender (passing lanes) than many here see.
I don't know why you think this is a burn. We aren't talking about having above average shooting every night, we are talking about a level of streakiness that some of our other top shooters don't quite have.
I get it though, people are taking it as unfair criticism of Loyer and going into defense mode. But the reality is that he isn't a perfect player, and we can talk about weaknesses without people getting upset. He has two "needs to improve" being more consistent on the offensive end, and being better on defense.
I think Fletcher has followed a fairly normal improvement curve so far.
All his numbers are up. He's just not taken the major jump that Braden has.
And until he's strong enough, can't really take. We sometimes see other soph's and even frosh being physically "Big 10 ready", but that's not the norm. 2 years in,
Heide and Waddell aren't the physical beasts they will be in another year.
Colvin has a ways to go, athleticism not withstanding.
Braden scores most of his points off pick and roll, playing off the attention Zach gets.
Whether its the curl jumper as his man drops a step covering the entry to Zach or getting to the hoop it's because he has the ball in his hands as the play is happening and Zach's action gets him open looks.
Helps that he finishes the play VERY well.
Fletchers had a few of those as well, but doesn't handle the ball nearly as much. As we've seen other teams do against us in some big loss's, it's a huge factor. Fletch has to get his running off picks mostly, and if the pick isn't good enough, or the defender is just tough enough, that's a task.