To your point I don't even think it's necessary to speak as the character. 3rd person indirect is fine so long as the intent, motivation, and personality are described well enough.I really don't consider putting on an accent to be a DM skill. They're cringey even when well done in my view and can be left off entirely.
So, as far as I'm concerned, don't feel bad about not being able to do them.
Hmm, so they're effectively asking for more uncertainty as to the outcome and meaningful consequences for failure so they can roll dice and potentially get some kind of payoff for their investment in these skill proficiencies. A bold strategy on their part. I'd be perfectly fine with getting the information without rolling. But then, knowing how you resolve social interaction, I'd probably not invest in those skills. No big deal.There's surely more, but I've identified a few areas of improvement last year.
- When my players engage into social interactions, whether its negotiations, intimidation, or persuasion, I tend to give them all the information without asking them for rolls. My players with high skills in those areas mentioned a few times that they'd like to be able to shine more.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.