I certainly didn't. To clarify...Does selecting various pieces of wood to achieve a specific weight and balance have an advantage or disadvantage over using dowels and weight bolts? Does using a dowel and bolts into a core have a homogenizing effect on the playing characteristics? Do you risk changing the specific characteristics of a certain type of wood?
I have done it both ways you describe, and have settled somewhere in the middle. Coring is the best thing to happen in cue making since the lathe, but it took me a while to come around to that conclusion. I used to be a staunch opposer to coring, nor would I use metal in the "A" joint or have weights bolts. I believed in choosing woods according to weight & tone to naturally weigh & balance the cue. I built some awesome playing cues like that.
Then I began playing with coring, mostly so that I could use burls & high figure woods that otherwise wouldn't be strong or stable enough for cues. I soon realized through experimentation that combining a high tone host wood with a low tone core would result in a medium tone. Seems logical I know, but it took experimenting for me to learn it. That knowledge opened up pandora's box. I could now create any weight and tone I wanted just by manipulating the type & size of core wood. Wasn't long before began trying some different "A" joint experiments and found that a metal stud worked just as well as threading the tenon, and had no affect on playability. However, it did allow me to adjust weight internally. So now I use a typical "A" joint with metal stud. I even built a few cues with solid cores to see what that was all about, but wasn't happy with the lack of control I had over tonal characteristic.
As for weight bolts to control weight, I began doing that in order to stop folks from drilling into the back of my cues so they could change weight. Players wanted to adjust weight, and several cues were torn up by goofy repair guys attempting to make it possible. I preferred to weigh & balance the cue and seal it up to keep it as is, but buyers didn't always like that. Other than slightly affecting the balance, weight bolts do not interfere with playability, so it wasn't a tough decision for me to make when I began doing it.
Point being, there's a hundred ways to skin a cat. And just about every way I have skinned said proverbial cat, people loved the way the cue played. I believe I'm building the best cues I ever have right now, but so does every other builder. A guy using a full core believes it's best. A guy not coring at all believes it's best. I believe what I'm doing is best. And who's to argue? The end result is what matters, not the way you got there.