I think everybody gets the numbers :) In regards to chain burn numbers do count, and losing a draw phase is even more crucial. In testing I have found and agree that 3x reckless is indeed better than 2x, because at 2x you really can't afford to lose your draw phase. However I have found that in a 40 card deck its better not to run reckless for this strategy, but that, when adding 3x reckless to my already existing 40 card deck it does seem to help somewhat. In this case i'm running 3 cards more, but am not losing any speed as opposed to my original 40 card build. The increased overall draw offsets the negative of losing draw phases somewhat by increasing my overall chance of keeping my hand size up and having enough draw.

To nuance somewhat, i'd never see myself running anything over 45 cards, but a strict adherence to numbers as you are promoting here is also something that can hamper you. For many strategies, these numbers are less important. Although in theory what you say is actual fact, what happens on the table is dependent on too many variables to make it fit to a numerical model of such simplicity. Sometimes costs do turn out to be worth it, and sometimes, as with reckless greed, it doesn't pan out despite the added speed.

While you make some valid points, I'd like to first say that not all my decks are 40 cards. 1-2 are 42 cards and maybe another 2-3 are 41 cards. In those circumstances I simply have not been able to find a card I can cut to my liking. In ALL of those decks though I am open to cutting those excess cards I however, am simply in a bind as I can not myself come to a conclusion of WHICH 1-2 cards to cut.

However, while you agree running 3xReckless is beneficial you say that you add it to your 40 card deck giving you a total of 43. In Chain Burns, you need to move quickly. You agree there too, which means you are a smart duelist (no sarcasm intended if it comes out that way).
I may consider, if you are running 3xJar of Greed, or 3xLegacy, or even 3xANY OTHER DRAW card of taking those out and keeping your Reckless to drop you down to 40. Especially if it is Jar/Legacy as those are simply 1-card fillers.

Good luck on your builds.

Well, as said, if people were simply drawing 1 card at a time like WAY back when the game began, the numbers would be definitely and completely factual, as in it would happen each and every Duel, but with other various draw cards and searchers which can shuffle the Deck taken into consideration, that really messes around with those numbers predictability and, also as said, it can easily make it so you end up getting a card early, despite having a larger Deck or much later with having a smaller Deck and vice-versa.

So far, I have yet to have any trouble with such things with 45-50 card Decks. And even if I do end up bad draws sometimes, that cannot be definitely said it was solely because of the Deck being larger. It could simply be because of a bad shuffle or something.

Right there are other cards that allow certain mechanisms to act faster. Like sangan, shining angel, foolish burial, so on and so on. However this then now poses two probabilities. The act of drawing the cards necessary to thin the dexk and the act o actually drawing those cards. Meaning no matter what it is quicker to draw those cards quicker in a 40 card deck than a 50 card deck. The easiest and most common example of this is seen with OTKs. They require 1-3 cards to win and other cards are in their deck to help them achieve the goal. So while their deck is packed with other types of thinners they still keep their deck at 40 cards because it is mathematically, statistically, better for them to draw their winning cards quicker in a 40 card deck bs a 50 card deck. I started a seperste thread on this common sense topic.

Well, you can stick with the numbers, I'll stick with actual experience. I've gotten stuff faster with 50 card Decks than other people have using 40 card Decks of the same Type many, many times over the years, including recently. Obviously the numbers do not fully support this because there are various possibilities that can mess around with them, so one cannot put all their faith into those numbers.