If the 4 of them had combined to make lets say 50 more of their 3's so far this year the team as a whole would be shooting 36.5%, which would be 4th in the league.
That is one more make per game. Doesn't seem like a lot. Kind of like Bull Durham who said that if he could get just one more hit per week, his average would improve enough that he would be in the majors instead of the minors.
I think a lot of conflicting but still true things have been said. We have missed a lot of 3s this year, Tatum missed what, 20 in a row? Other are hitting at career highs (GWill). Talent or ability is part of the equation for how many 3s you make, that is true, but shot selection, overall team offensive efficiency and other things are factors also.
More shooters/scorers would be great but I am not that worried about it as a singular issue. If we move the ball, move purposely without the ball, take advantage of early offense, go to the hoop, draw fouls, and take good 3s when they present themselves, we have enough scoring to be fine.
I feel what we need is a starting big that can shoot. I know, Grant Williams is making about 1.5 3s per game and that is great for a bench player but he is undersized and otherwise limited. Having a starting level big that commanded some defensive attention would really help open things up.