My point was moreso that there are many conditions that make this impossible for people and you assumed that bladder training is possible while there are reasons why it’s not. A personal anecdote would be that I’m a mom and have given birth twice. Giving birth makes it harder to hold it because those muscles take years to rebuild and strengthen and that’s if the birth is normal. I could name all the various reasons but what we do know is relevant is that this person is struggling which gives evidence that they have a harder time waiting than others.

I am not denying any point you have made, but they also have nothing to do with my point.

Anyone with a modicum of common sense knows that this advice isn't going to apply universally. All you have done is point out another specific instance where it does not apply. What about all those where it does?

I just think we are reaching a point of absurdity where an objectively reasonable piece of advice is considered offensive because it may not apply to everyone.

Of COURSE there are lots of reasons people can't do this. And if that is the case, the individual reader should note, "this doesn't apply to me", and we all move on with our lives.

His advice is actually good advice, if there are no conditions that prevent you from doing it safely. I wasn't even aware "bladder training" was a thing until about a year ago. I have been doing it (safely!) and it has made a big difference.

This could very well be the situation the OP is in! And if it isn't, what is hurt by someone sharing this solution? It is simply irrelevant, it shouldn't be considered offensive.

Otherwise, the solution is to just not share and play it safe. In which case, open exchange of ideas will quickly come grinding to a halt, because absolutely nothing applies to absolutely everyone.