I'm not entirely convinced that it's just the Model 3 cannibalizing those models. For the Civic and Accord there is something going on (as the HR-V and CR-V have both lost sales), but for the Toyotas...
Camry YTD difference: -12,528
RAV4 YTD difference: +11,870
Corolla family YTD difference: -18,133
C-HR YTD difference: +21,907
Basically, Toyota isn't losing the sales, they're just converting them to crossovers instead. (Now, where they are losing the sales and I suspect not converting them, is Prius family sales, -12,487 units on YTD, and that's with a refresh on the Prius c since then. I also didn't look at the Lexus brand, there may well be sales lost there.)