And the main features of ecash is it's strong privacy as well. So, I still don't understand why you think it is so different. Anything with that kind of privacy won't be liked, period.
Discussion
Well the thing is nobody knows you owned ecash outside of the mint. It's Bitcoin in Bitcoin out and Lightning in the case of Cashu.
Actually I see your point. The only difference in that you need to explain why you sent to a mint instead of why you swapped to Monero. Which isn't much I agree.
I guess that is an ever slight difference, but not sure if it is significant. Why else would you be sending to a mint (if that address is known and associated with a mint)? Will at least evoke major suspicion
And if you p2p trade or atomic swap for Monero - this is essentially the same thing as sending Bitcoin to a mint. Probably even better. No one will know you got that Monero aside from your peer (and you'll also likely be anonymous or pseudonymous with these methods too)