Dash didn't do anything "with little effort". It's a strawman argument, because no one ever said it was "little effort" anywhere. Evan Duffield and his team worked their asses off to create the features we have today. Don't believe me? Check the Github commits. The proof is there.
As for the remaining lies Chris de Rose and his partner spread, I wrote a thorough debunking: https://steemit.com/de/@macrochip/amanda-b-johnson-on-bitcoin-uncensored-a-rebuttal
The "technical issue" you posted from Reddit has also been thoroughly refuted and is impossible to pull off. The author himself already admitted he was wrong. http://www.dashnation.com/education/instantxploit-cool-name-no-threat/