Just a little chemistry lesson...
Soap is different than detergent. Soap is made from oil, detergent is a synthetic compound. BTW, for those who use Dove bars, that is a detergent, not a soap.
Anyway, they are both "surfactants", meaning they disperse oils and grime and bind it to water so it can go down the drain. The suds you see don't actually do anything, and are there because the formula was made to make the consumer think the soap is more "active"
So, what do soaps and detergents do to the environment? I would direct you to this link, but there are plenty on the net.
https://www.sciencedaily.com/release...1003135742.htm
If you use soaps or detergents in your gray water, you may have "suds". I personally don't want to look at other people's suds, but they aren't harming anything as they will disperse.
But the long term harm to the environment is not really all that bad. One caveat to that is that the chemicals in some detergents are prone to encouraging algae growth. That algae, depending on where the watershed goes, might make its way into lakes or oceans, and from there can create algal blooms. The same thing happens from farmers using chemical fertilizers on their fields which eventually makes its way to bodies of water, and frequently causes massive algal blooms.
So, carefully consider what you are dumping, what is in the cleaning products you use, and what part of the environment you are dumping it on. Is the ecosystem where you camp fragile? Does the water nearby lead to a lake or stream
Things to consider, and we all have to make up our own minds and try to be responsible to the environment in which we camp so that it can be preserved so we, and others, can continue to enjoy it.