Who said I was talking about anyone but pros? Someone asked for a reason to shrink the target, and I gave one which was rooted in the concept of par and course size. Par, borrowed from ball golf, is considered the score at which an expert will navigate a hole/course. So, my point was that reducing the target size could be a way to make par a more meaningful number in our game, particularly for the top levels of play, without having to continue to make courses bigger and longer.
The PDGA defines average pros as being able to hit 6-8 out of 10 putts from the 25-30 foot range, and top pros as being able to hit 7-9 out of 10 putts from the same range. So pros in general can be expected to make anywhere from 60-90% of shots from 25-30 feet, or to find a good mid-point, 75%.
To further my point, the formula for par in ball golf is defined as the number of shots required to reach the green, plus two putts. We can't really make that kind of translation one for one in disc golf because our definition of a green is different (10m circle) and arguably too small for these purposes. Realistically, the range at which a pro can be expected to hole out in no more than two throws represents a far greater percentage of the total distance of a given hole than an average green does in ball golf. That is largely due to the greater range at which a putt can be reasonably expected to be made.
If we reduce that range by reducing the size of the target, then we can also reduce the range at which no more than two throws should be necessary for a pro player to hole out. By doing that, we can reduce the minimum distance required to make an effective hole, whether it's par 3, 4, or 5. And it would also reduce the instances of holes that should truly be considered par 2s, at least for elite level players.
Now I'm sure someone will swoop in with the "why do we have to be like ball golf" blah blah blah. Not advocating that at all. But the concept of reducing target size really is best utilized in discussions about how to define or "fix" par in our sport. If we don't care about par (and frankly I find it meaningless and we don't need it to flourish as a sport), then it's a moot point.