> ethically all positions are not equally valid.

Ethically, no; morally, yes.

Morality is just Cicero's somewhat questionable translation of the Greek concept of ethics into Latin (the latin term having a meaning tending more toward customs than the greek term, which leans more toward virtues). But in moral philosophy, both are used interchangeably, both terms are used regarding the study of what is the best way to act.

There's of course tons of ways to approach the problem, and some people perhaps associate one with ethics and another with morality, but that typically stems from answering different ethical (or moral) questions. Such as, what is best for me, or what is best for society, or what is good, or what is fair.

The idea that there is some significant, load-bearing distinction in meaning between "ethical" and "moral" is something I've encountered a few times in my life.

In every case it has struck me as similar to, say, "split infinitives are ungrammatical": some people who pride themselves on being pedants like to drop it into any conversation where it might be relevant, believing it to be both important and true, when it is in fact neither.

How are you defining 'ethical', 'moral', and 'valid' ? Are you saying that all moral claims are valid?

It might be technically correct, but such an easy take is unethical and depraved.

People differ in how they view what is morally right.

Illegal immigration for example.

Some may say it's immoral to not allow illegal immigration, those people are just searching for a better life.

Others point out that by looking past that you allow the exploitation of workers, the estrangement of families, and of course the horrors of the coyotes that rape, extort, and enslave those people.

Another one is crime reform (ie, releasing prisoners, no cash bail). Those who support it believe they are being compassionate of prisoners while often missing the compassion for the victims those criminals hurt and incentivizing further crime.

Sometimes one is so tunnel visioned in their moral argument, they cannot see that choice causes harm to others, often greater harm.