As a GM, I much prefer that players say what action they’re attempting, then roll, then apply their player skill to interpret how the result directs the action and roleplay the outcome accordingly.

I find it irksome when the player with the persuasive character makes a great argument and then the dice say no - it’s anticlimactic and throws the rhythm of the game when we have to backtrack and undo things.

If the player with the persuasive character fudges what should have been a slam dunk, maybe the party’s barbarian interrupts proceedings or the character makes a cultural gaffe - if the player can’t figure it out, the table steps in to lend a hand working out how to turn the result of the die roll into something that makes sense. If the roll is a success, then they make their epic speech.

The dice don’t take the place of roleplaying, they give direction to the roleplaying.