I'm a pre-washer and a starcher. I only buy for projects and not for stash. When I iron my fabric after washing, I always use starch. I used to use the spray on starch, and actually guess I still do. But I now buy a liquid concentrate that I mix in a 50/50 solution vs. the readily available canned spray starch. I usually iron the fabric enough to get it warm, spray on the starch, let it sit for a minute or so to let it soak into the fibers of the fabric and then iron it to within an inch of it's life. Then I start cutting. And if the cut/sewn pieces decide to misbehave in the piecing process I starch them some more. Have never had an issue with my (Viking Platinum) machine and the starch. I also hand quilt and don't notice the starch being an issue then either. I wait until the quilt is totally quilted and bound before I wash. Then was the quilt as I would anything else.
Hope this info helps. I'm sure others will be along shortly with more info/opinions.