Hmmm, there is many studies proving the opposite it's a debate as old as time. I think it's a preference thing, I'm a flusher, where as spek9 and p10p clearly are not. I Won't grow without flushing dispite what some people say. One university says don't flush and another says flush. Same thing happens with all knowledge, there will always be a conflicting argument. Take cannabis in general and the phrase "Cannabis causes phycosis".
University studies suggest certain compounds will cause phsycosis, other university's sware the those compounds work in conjunction with the endocannabinol system in your body fighting cancers and maintaining health. Oh and before someone say conspiracy or tabacoo industries etc fuck off..... Maybe during the days of reefer madness but not now.
It's universities studying and interipting data differently apply the same logic to things like 5g and cancers, it's bolloxs one university says it may could possibly have long term effects due to RF exposure and the world explodes with cancer theories from 5g masts with studies conflicting each other every other day about the effects of RF exposure. Same thing happened in the 90s with keeping mobiles in your pocket and being sterile. Guess what I kept my phone my pocket thought he 90s/00 and I have fucking kids and so does and did everyone I know, so clearly there is discrepancies.
However when I flush I don't drown in water just switch to water and add the same amount of water as I do if as if I was feeding it for around 5-7 days with the same amount of dry period in between each water. Chucking 100s of litres of water just for run off is wasteful as mentioned before, poor kids round the world can't find drinking water that's safe and we Chuck it on the floor......
Personally I think EVERY home grower over nutes at some point or in someway has an issue. Compare this to professional or high end grows (I'm not on about if you think you grow high end product, I mean spending 1000s on grow room facilities or equipment with decades of knowledge about strains, adaquite testing facilities out side of an EC/PH pen etc.) and you can actually measure everything exactly and be able to respond instantly to a change (not the day after symptoms show) I would say it's fair you don't need to flush as everything is monitored recorded etc and spoon fed everything it needs at the exact time with zero waste. Which is how science studies are done otherwise data is no longer comparable due to deviation factors and unfair testing.
However the homegrower (good or bad) will always add a slight bit too much of this or a bit of that with the attitude of ah it's over 1ml I'll just dilute it out or close enough (affecting ratios). This happens time and time again I'm also just a guilty as the next person, anyone who says I dont is a lair, as unless you can truely measure your dosing vs actual uptake needs then you can't, nearest 1ml is best your Going to get.
Also added to this say you fed you normal regime on Monday, on Wednesday how do you know what exact nute has been consumed the most or in what quantities.....could be N, P, K, boron, maganeese, calcium, magnesium, iron, copper, zinc or molybdemn? With out sampling runoff, plant motabalisim or medium testing by putting through some form of automated chemical anayliser you have no fucking idea. This is where labs take over from you or me, they can tell you as they have access to all forms of equipment.
Also plants don't technically starve in flush if done correctly. As nutes do build up in the medium and the plant also has large reserves the plant mearly feeds off these reservoirs rather than uptaking more from the medium. Maybe if you drown them Everytime your flushing with water I'd agree with excessive or pointless but 5-7 days of water to the point of saturation works well for me with nice plant fade and good end product.
However I do understand people disagree when it comes to.feeding and flushing.
Side note:
Maybe it's because I'm not from the US or I'm not down with the kids, but I've heard the most retarded way of arguing the other day "bro science" I would tell you what's wrong with this but if you need to be told why this is a flawed arguement you're not worth debating with.