They seem to be doing everything they can to make it the most anonymous coin, addressing some of the shortcoming of Monero and Zcash.
Thanks for asking
Well personally I think there was some disappointment in the delay of MTP (which we had very good reasons for). We really wanted to have it released on time but recent academic submissions have made us decide to wait longer.
https://zcoin.io/core-upgrade-to-0-13-and-mtp-update/
In our early days we also had a lot of drama, from a questionable co-founder that has since been removed and also a hack that happened due to an understaffed dev team which are lessons we have learnt from and we have greatly expanded our capabilities and team from a single developer (Poramin) to where we are now.
https://zcoin.io/team/
There's also a lot of confusion thinking that Zcoin is a clone of Zcash due to the similar names and the further confusion between Zerocoin (which Zcoin uses) and Zerocash (which Zcash uses) or people that don't understand why Zerocoin has certain advantages over Zerocash.
In time, we are confident that Zcoin and its tech will shine It's actually promising to see that there are an increasing number of coins adopting Zerocoin or forking Zcoin for their own projects