I wasn't trying to make it an argument, I was explaining my views on the subject. You asked why chips vs cubes was that much different and I was trying to explain. Sorry if it came across more harsh than intended, I like nerding out on fun subjects and happen to be a big whiskey fan, it probably translated to plain text poorly. I'll try again.
There's two things to consider with oak aging. First is contact area between the beer and oak. The more surface area you have in contact the faster the beer will take on the oak character. Chips, because of their shape, have a lot more surface area than an equivalent weight of cubes. As a result, the chips will impart a lot of flavor very quickly. If this is your first time playing with oaking it can be very easy to over oak with chips. Cubes have a smaller surface area compared to the same weight. I bring up weight because you'll see people mention things like "use 3oz of oak per 5 gallons." That 3oz will have hugely different affect depending on the form factor of oak. Cubes are a better option to start with because they work slower. You can check it once a week and decide when you're happy with the results. With chips you might blow right past your desired levels if you're not careful. I point it out only to help people who are new to the subject.
If you have used chips in the past and know what time period gets you to where you like your beer, great, keep doing that.
The second is the dimensionality of the flavor you get from each. This is less important to some, but it's fun to discuss. Some people don't notice a difference, others swear by it. Cubes, being new oak that's been toasted, have different layers to them, much like a barrel will. Char on the outside, fresh on the inside. these layers do allow different flavors to be pulled as the beer soaks in and out of them. Chips tend to be more single dimensioned. You're right that the cubes you buy from the LHBS haven't spent years soaking and reacting to a liquor. But you can add that layer with a month or more of soaking them in something. Is it perfectly the same? Maybe not, but it's close enough that most couldn't tell you otherwise. The description you'll see most is that chips tend to just give a wood flavor, while cubes will give a wider spectrum including the vanilla and other flavors associated with bourbons. Adjusting your quantity of oak and time left aging on it changes those dimensions. Again, not saying that chips should never use used, just pointing out that there are different results that you may want to experiment with.
I brought up my experiments with oaking in a bottle because it's been a fun science project. The biggest warning I see is being careful not to over oak, not to leave the beer sitting on it too long. I wanted to see if there was a level you could add where it would impart the flavor you wanted and hit a plateau where it didn't go too far. My thread on it is here if you're interested:
https://www.homebrewtalk.com/forum/threads/oaking-beer-in-bottles.636724/ I have a bottle that's been sitting for a year chilling in my fridge to try this weekend and update the thread with.