Blocks are not what determines finality. Dash has 1-2 second finality through a function called InstantSend, which deterministically settles every transaction instantly. So with in 2 seconds a Dash payment is more permanent and irreversible than a Bitcoin transaction will ever be.
Some services treat them like Bitcoin transactions and make you wait when you don't have to.
Amazing! Can't wait to spend it at more locations and enjoy the Speed!
Try buying something with Bitrefill, you'll see how fast it goes through
https://www.bitrefill.com/?ref=paywithdash