no, the difficulty adjusts so that the blocks are found at a consistent rate. Transactions still happen effectively instantaneously, and they are confirmed at a rate roughly once every 10 minutes (albeit with a high degree of variability)
Please don't exaggerate. I have made a few transactions and most of them took 20 minutes till first confirmation.
There was no exaggeration. Confirmations can come in seconds, they can come in hours, but it is completely accurate to say:
"they are confirmed at a rate roughly once every 10 minutes (
albeit with a high degree of variability)"