Judging by you're post history, you're dealing with old ethereum wallets and funded credit cards. These trades have risks that no escrow can protect you from.
Based on his post history, it doesn't seem to me that he is looking for escrow here at all. He probably needs a trusted & aged account to add authority to some kind of offer or scheme. The fact that he included merit as a condition in this case only shows that he does not know this forum very well.
But he/she also mentioned about willingness to use "a trusted middleman or escrow" for his/her transactions. I'm with your suspicion, though. OP is probably looking for a reputable account for something else, probably to appear credible, to give more weight to offers.
Including merit as a condition shows OP knows how things work here very well. Although I don't necessarily agree, merit is probably perceived as the new measurement of reputation, at least more than rank, length of stay, activity, even trust.
Anyway, I hope you aren't a scammer, OP. But if you want to deal with the real account owners, I suggest you communicate with them here and not on Telegram. You might end up dealing with an impersonator.