Simply put. No.
In fact, trilams can be designed and constructed in ways that allow them to be made shorter for the same draw length.
My shortest bows are trilams... (not as short though as you're proposing) and some of them are also, surprisingly enough, some of my smoothest, balanced, sweetest shooting bows I've made... which I think has more to do with design than the fact it's a trilam. They just more easily allow those design options.