Yikes, you guys are SPOILED! Most anchorages here on the Wet Coast in summer, you're lucky if you're 50ft apart from your neighbours. AND with a depth of 40-50 ft, with 3:1 scope so you don't hit every boat in the bay when you swing. If you're not touching, you're not too close.
I have had "advice" from others when I anchored what they perceived to be "too close" (or sometimes hidden dangers), and I've always moved. If someone else anchors "too close" to me, I usually just "suck it up" and add some bumpers. Surprisingly, I've almost never touched another boat in an anchorage (and when I did, it was because it was dead calm and boats were pointed in every direction, drifting...)
If there is some current in the bay, you can adjust your position a bit with the rudder.
druid