Back on the subject of summer repotting, and off the topic of personalities.
I believe I have always been careful to point out where I live and the climate I am dealing with when I advocate summer repotting. I can not comment on whether it is good for Alabama or not, I don't know that climate intimately. Summer repotting works in my relatively mild summers. I have a relatively short growing season, often with a cool spring, so some trees do not wake up adequately for spring repotting. Depending on degree of root work, I can protect trees from cold over the winter if necessary.
Trees I have successfully repotted in August.
Spruce - Colorado blue spruce, Oriental spruce. Both repotted with major root work. Both successful.
Pines - Jack pine repotted 2 nursery trees, one over 30 years in the same pot, one over 10 years in the same nursery pot. Both with major root work. Both are in either 2nd or 4th year post repotting and doing well.
JBP - cork bark varieties. I have repotted 'Kyokko Yatsubusa', 'Brocade', 'Hayabusa', 'Gan Sekki Sho', 'Ogon', and 'Taihei' in August with no problems. Generally these were moving from 1 or 2 gallon containers to bonsai pots less than 4 inches in depth. Kept as many roots as possible, but moved a lot of roots around to flatten out root balls. I've been repotting pines in August for over 20 years. I keep it to myself, because those living in warmer climates just get indignant when I try to tell them what I actually do.
Thuja occidentalis 'Hetzii Dwarf' - from 3 gallon pot to Anderson flat. Major root work in doing so. 2nd summer post repot, looking good. Will begin styling next year.
Hinoki - I move all my Hinoki's around in August.
Junipers - I always repot junipers in August. never any trouble.
Ginkgos - I did my first August repot of a ginkgo this week - so far so good.
Chaenomeles - Flowering quinces - I do repot mine in August - no problems, fewer issues than spring repotting.
Azalea - I do repot azalea in August, actually just about any time of year except middle of winter - no problems.
Other deciduous, and deciduous conifers not mentioned above - I do my maples, elms, cherry, Malus and others all in spring, not summer. Larch - have had spectacular failures repotting in August. Later winter very early spring ONLY for Larch
So I do not recommend a blanket summer repot, but for the trees above, I think summer is better than spring. IN MY CLIMATE & MICRO-CLIMATE. Your own personal results may vary.
I usually do not ''promote'' August repotting, because it may not work for people in other climates. It works for me, I do it. And now I am ''out of the closet'' about it. And if I repot, I do not hold back on doing root work. If it needs root work, it gets root work. So for the species I do August repotting, I do the appropriate root work for the level of tree development, a point to the OPs original question. I don't just fold roots under. I do all the work appropriate.
I also allow adequate recovery time. And in preparation for repotting, I will skip ''bonsai work'' and just strengthen a tree up beforehand, then give good recovery time. Much better success this way.