It is. It stops a process I cannot describe well at all. But is the sun, in large quantity, by scalding and UV damage and dessication, not also something that stops function? Wind can damage, but it also makes the meristem stronger. To much water stops transpiration in plants but is simultaneously necessary.
I learned on some tomatoes that they could survive small quantities of roundup and grow through it. The more I learned about that type roundup type pathway thing, and read on hormones like 2,4 D, then the more I was impressed with how little is necessary to hurt a plant. The other side is how incredibly smaller amounts hormone are needed for growth. I became more able to understand these "ranges" of function in plants. They amaze me with how efficient and resilient they are, but maybe thats just me getting older, becoming more aware of how all life works together. I use some chemicals but now I would rather use too little and wait or apply it twice for safety. Some of them leach, some turn to gas and drift, some last for years and ruin any useful recycling efforts. Some, like glyophosate, stop bacterial action too. They really have to be used in a very narrow range.