you want these donkies calling you, this is where the profit comes from.
in loose games you can also loosen up a bit to take advantage of the extra odds
Remember, 90% of the people bust out of MTTs out of the money. the big scores are rare but the pay well. I would much rather be playing in an MTT where people are calling me with junk than one that is tight where I only get called by the great hands.
When you play too tightly for table conditions, you are not playing a good game - you are playing a sub-optimal game. Overly tight play is leaving money on the table. Folding pocket 5s under the gun in an early in an MTT where people usually limp are make small raises is not playing "good poker" it is being a fish and missing out on money (maybe this isn't the best example but try to understand the concept). In loose passive games position becomes less important. If I have 100bbs and people are limping or only raiseing 3x or less the difference between my EP play and my CO play is not that great. What good is position when you have 6 guys in the pot that are going to limp and check-call their top pair crappy kicker or small pair?
U need to find the value in every bet and call and different table conditions have value in different places.