bottom watering will inherent;y run into problems in the long-run. Without top-down runoff, buildup of nutrients where the moisture ebbs and flows at the top will eventually be a problem if given enough opportunity. that doesn't mean it'll happen every grow and there are things you can do to mitigate it, but also defeats the purpose of having an 'automated' irrigation setup.
Each time it dryies back, it deposits solid nutes that will then re-dissolve as more fertilized water flows back in. now it's got the fertilizer of incoming water plus whatever deposited and re-dissolved.. this can happen repeatedly over time and is the concern with bottom-watering systems. Since we only grow for 3-4 months,might be low risk but still an unnecessary risk to add when there are so many better ways of doing it.
proof is in the pudding.. if you have consistently healthy plants over time, who fuckign cares how the plant gets the water and minerals it needs, lol.
But, if oyu run into issues and inconsistent results even 10% of the time, should probably move on to something else. it could take a few years to see these numbers play out.
the constantly wet substrate will be more prone to pathogens, i'd assume, too. Maybe the flow from the wick is light enough not to be a problem?