Okay I'm bugging out at this point, you are clearly another Racing Roadkill who knows better than everybody else, but just a last thought, on the bollocks you have just typed, "I put safety before the law." and "Getting to them can be risky" do not go together, I also question that crossing the white line, positioning your bike in front of a car is the safe thing to do just because you believe you have the 'Right' on your side, because you don't. But anyway stay safe & enjoy your riding, for as long as you can, us law abiding cyclists will just pick up the flak for your selfishness.
No conflict, I don't proceed to an ASL if it's risky to do so. I generally filter up the right, rather than the left, for that reason, and, if the light changes, I abandon the maneuver and merge back into the flow of traffic (something I'm pretty well practiced at).
But, in recognizing the fact that proceeding to an ASL can be risky, I don't just blindly use the cycle lane to get there, as would be legal. However it would be foolish if there was a 44 tonner there waiting to turn left.
Sitting at the back of the queue has its own risks, one of which is being crushed in a rear end collision. ASLs exist for a very good reason - it's safer for cyclists to be at the front and clear the junction first. Not get caught up in the traffic light grand prix, which is exactly what happens if you're stuck to the side of an idiot sat in an ASL. And it's not like you can easily tell that when you begin filtering, and, although I always have a return gap when filtering, it doesn't necessarily reestablish you as part of the traffic flow (much harder with a stationary gap, rather than the point where the front vehicle is starting to pull away).
A good summary
Why risk getting caught to the side of vehicles proceeding through a junction when you can just nip ahead of it all. Safety takes precedence, always. I obey the law where it does not compromise my safety, which is most of the time. But, if there's a conflict, I will always choose safety.
Safety is of course relative. I think the safest course of action is to filter up towards the front at junctions with an ASL. If then confronted with a vehicle sat in the ASL, I think the safest course of action is to go and sit in front of them. It may not be risk free, but that's my assessment of the situation in Oxford.