To just let soil sit in a pot sitting in water is not good. Soil will get soggy. Asking for bacteria to form or roots to rot.
Ive used fabric pots for a while now. Ive done top feeding and bottom feeding.was able to reach a good harvest either way but with issies both ways. I am currently running a grow with 5 gallon fabric pots with a bottom feeding tray. I watered from top only fully saturating the pots and letting them dry back till the leaves reached the edge of the pots after transplanting a 2 week old plant. I am starting the second week of flower now. Once the leaves got close to the edge of the pots, I top water enough to fully saturate the top and then pour about 1/3 a gallon into the base to wick up. Its been working amazingly well so far.
Air pots dry fast. Especially around the sides and top with good air flow. I put mulch on the top to slow it down. Keep in mind I use dry fertilizers, and have not tried feeding nutes through the bottom. Bottom feeding only, allows for a crust of salt to form on the top. If you dont constantly water from top even with bottom feeding, the salt build up can cause issues. You get a big enough build up amd then try to water from the top and you will reak havoc on the poor plant from the salts. By watering some from the top, then letting the bottom wick water up, I dont force my nutes out the bottom, nor have the built up on the top so far. Constant water to roots isnt the problem, as hydro wouldnt be a thing if it was. Overwatered soggy soil will suffocate the roots. Wicking method does not over water. I also use about 1 inch of perlite in the bottom of the pot to keep the bottom of the pot from becoming soggy. You can make a wicking system really easy too. I bout mine from vivosun, however, some shoe laces and a small tote can be made to a wicking system. Just have to cut holes in the tote for shoe laces to drape across the top of the tote lid while shoe laces rest on bottom of tote. Make a hole to fill the tote (like on the side of the tote away from where the pot will sit so you can pour water in without having to mess with the pot. Pour your water in. Sit the fabric pot on the shoe laces. Wicking system done!
This is an experiment for me. If it continues to work well, may be my new go to. My base holds a full gallon per plant. I am constantly pulled away from my grow for sometimes days at a time. Having a gallon reservoir per plant allows me to full saturate the pot and fill the reservoir leaving me several days before I have to water again. I dont fully load it up unless im gonna be gone for a while. Otherwise I use the method I said above and so far im happy with results.
Just my thoughts,
Best of luck! Happy growing!