The cassock is the way to go. It’s deeply rooted in tradition, looks quite impressive, is apparently quite cool for those summer months, and clearly distinguishes a priest.
Of course, I can cede that the Roman collar with shirt and pants are much better than “business casual” clothing. Far better! There’s nothing wrong with this at all. I would much prefer the cassock but this is okay.
I think the post was just asking for preference of Diocesan priests. There are, of course, religious priests who work in a parish so I could be wrong. In that case I would consider the cassock to mean habit.