You mean functions other coins have a long time already?
Face it, Monero never developed anything on their own and even with copying they are really, really, really slow.
Also, didn't Monero had the same bug?
In testnet, that's why peer-review is so important, which SDC lacks... but I don't want to start XMR vs. SDC here, I just found your claim that monero didn't develop anything new ridiculous...
a coin without a GUI doesn't get 100mil-marketcap out of nothing you know... do some research before posting nonsense, especially when you want to be taken seriously regarding other topics (spectre being a scam)
best regards