~2 months (XMR "cripple mine" ~7% of the current supply + spend $250k in mining costs)
vs
1-2 days (DASH to instamine 33% of the total current Dash supply + ~$1000 in cloud mining etc for 2 days)
Yes Monero is such a "scam". 
well at least you admit the monero 7% cripplemine scam. DASH had a 10% instamine distribution bug but it turned out to be a feature.
to try and minimize the cripplemine by using "current coin supply" is scammy and dishonest considering the highly hype inflationary monero emission curve where half the coins have already been mined in less than a year and a half, now that's what i call a instamine.
if it wasn't for the DASH instamine bug then there would only be like 4 million DASH right now compared to the current 10 million plus monero instamine.
and monero was launched months after DASH!