The 3/4 sleeve poplin shirtdress looks OK, is in styling very neutral, and looks like the thing I would wear on vacation. idem for the skirt, of which I do have a similar example. As at least when I wore pants..

I had typical similar coloured shirt and pants, which had cargo pockets and unzippable pipes. light material, of a durable colour, not easily soiled.
I have no doubts that any of the shown dresses could be very comfortable and nice to wear by men, if they would only step over the thought that dresses are for women only.

They are only actually a shirt and a skirt sewn together..... Or made out of one piece.

But they can give much more freedom , at least in another way than even our beloved skirts can, by being one piece, light and only hanging from the shoulders and having nothing around our waists.
Like 'em or leave 'em.
In all, I believe all on that page, are suitable for men, except the floral and pintuck examples, which I do like, but I am sure are way too over the top for most "men".
As for the mentioned dimensions etc as Crfriend so rightly mentioned, that wilk be an ever ongoing thing, as do you think that all women can wear all clothing on the store shelves? No, If it fits your particular build, great, if not look further. Don't have the illusion that women have one body build and all clothes fit. So it would will be the same for men. Ideally personal tailoring is the best thing, but beyond that, making dresses tailored in the same manner as men's wear is for the men's body, then fit should not be an issue. as for the arm length, I agree to a certain extent, as furthering our horizons means that there are more options open for us, so I would like to see fashion opening up to men, and giving them ( in the case of dresses for men,) the same type of choices as for women, like different sleeve lengths. All that is of course subject to feasability etc. You don't have to make dresses for the average JOE man, so why ent them on his perspective?
Admittedly, finding a skirt to be worn in a ""manly""

way, is so much easier than finding dresses that have a more "manly" type of fashioning so as to be not too ""fem"" in the eyes of any man not looking in particular for that finer fem look, even if it is only a deeper v neck than what men usally wear.
Although, having a deep V neckline could be just the thing to show off your masculine chest.....
It is and always will be the man / person in the garment that determines what the look is and how it looks.