So, you're once again in favor of leveling the playing field, regardless of skill? This, to put it mildly, contradicts the very idea of a mirror match. Anton put it very accurately - there's always something to do, and there are many challenging battles right from the start. A newbie won't be able to handle these challenging things, no matter how much time they have, so a shorter timer almost always benefits the weaker player. The exceptions are a few players I've seen, like Jurist and Dark, for example, who both play well and click as fast as Starcraft players.

So, I'm in favor of what I wrote in my previous post.
Your approach is one-sided, although it's more likely just incorrect.
To put it in your words, newbies will spend a long time thinking about a particular action, while a stronger player will spend less time on it. Here, it should be noted that these "newbies" may not notice the paths of development and won't spend time on them, unlike a strong player (and it's not a fact that these paths of development will be correct), which results in an approximate balance. Of course, there is one exception here: this discussion would make sense if there was a real timer that would be an important aspect of the game, and not the one we have now, which, I repeat, was greatly increased to soften the transition from a SOD timer to a chess timer.
Anton put it very accurately - there's always something to do, and that's the most accurate way to put it.
It would be appropriate to ask what Anton's or your playtime is on mirror matches (specifically, the ones on which the tournament is held, and not in Wt). But again, this is not relevant to the point.
Do you see a few? We probably play with different people and in different games. The vast majority of my games end with a timer of one to two hours on both sides, despite the length of the game.
On the contrary, I know a few slow players who always run out of time.
There are many advantages to reducing the timer. This is obvious.
Most of those who ask for a longer timer are probably not asking because they lack time, but because they are afraid of accidentally leaving their comfort zone with the infamous cup of coffee, because for most people it's just a relaxing fun, and if this can be understood in seasonal games, then it's not quite right to cater to this in tournaments.