On the other hand, one reason you go on those streaks is a number of players are playing well and thus putting up solid advanced metrics.
And a streak of good play is always preferable to a streak of bad play.
The core problem is determining what is a player's baseline, and is it trending up, down or stagnant?
You have to take into account age, injuries, and role.
One reason I wasn't worried about Giroux' scoring was he has a long baseline, and even though he's gradually declining (not the same player as two years ago), he's not close to falling off a cliff, so his scoring might decline, but it shouldn't have declined as dramatically as it did earlier this season, and sure enough, regression to the mean has occurred.
Where it's harder are players like Laughton and Hagg, at 25 they're on the cusp of entering their peak seasons, so improvement may be a short-term fluke or the product of sufficient experience that they can take their game up a notch. Laughton had 30 ES points last year, he's on a 39 point pace this year, while his usage is pretty similar (12+ minutes a game at ES). Hagg is on a nice streak with Braun, has he improved, is Braun a steadying influence, or is it a fluke?
With players like Sanheim and Myers, you know they're going to trend up, but how fast and for how long before they flatline?