I'd like to think I don't take any risks filtering but others might judge I do
Depends on your perception of risk
Someone told me that 38mph down a (non resedential, main road) on a bike was stupid, all it would take was a car to pull out.
I responded with a quick account of the car that careered across the road and smashed into the car waiting at traffic lights just in front of me - if that had been me at the front of the queue - and asked if waiting at a red light was therefore stupid and dangerous.
Everything carries a degree of risk - not least being sedentary and not cycling because it's "dangerous"
The most risky filtering I see regularly is at roundabouts - I rarely if ever filter on the approach to a roundabout unless I am turning left, and then with extreme care
Example: A 3-lane approach to a roundabout. Left lane is "Left and straight ahead", Middle lane is "Straight ahead and right" and Right lane is "Right turn only". I queue, roughly for only 2-3 minutes at most, in primary in the centre lane, in order to turn right at the RAB
I see many cyclists make the right turn by filering down the white line between left and centre lane, and keeping that position as they enter the RAB, trying to turn right when the vehicles on their offside for may want (usually do on this RAB) to go straight ahead.
I'd rather lose 10 minutes queueing over the course of a week than longer in a hospital (or worse)