It must be difficult, but that's compensated for by the fact that the length of your trip is ideal, not too long or too short.

My regular route has 28 controlled intersections in 10 miles, so 2.8 IPM. It also currently has about seven different construction zones (for some reason the county seems to have decided to fix every road at once after spending the summer applying chip seal to all the previously nice rural roads ), so I've been mostly using an alternate route which is only about 2.3 IPM but requires a couple of lane crossings that are riskier than I would like.

My IPM is about 1.5, but the lights downtown are timed, not triggered by sensors, so some lights are always green when I get to the intersection, so really, those shouldn't count. Effectively, the IPM is about 1.0, and they are mainly bunched at the beginning and end of the commute. SteelyDan's 9.0 sounds very high.

Controlled - stop signs or lights 2.3/m in (14 in 6 miles) 1.8 home (25 in 14m). In bound I'm on a major diagonal rd so the only lights are other major streets. When I bump off the the major street the last couple miles on to residential there are a few stops I rarely need to stop for at that time of day and one light I only need to wait to clear (sensor driven I don't trip).

Home bound traffic is much heavier and I start on major arterials where the lights are other arterials, I also run a part of that on MUP and parkway drive that parallels a river so no roads cross it except a few major arterials. Again a share of this is quiet residential with good sight lines that the stops signs are often yields. Running arterials the lights are usually 1/2 to 1 mile between other arterials, but the light cycles are longer.

My short route is 6.7mi. RT with a 2.7 IPM. My long route is 9.5mi RT with 3.2 IPM.
I was a little surprised because the long route has a stretch on the MUP with only 2 intersections. However, it puts me in the downtown area that has a stop sign at every intersection, no options for a through street. The shorter route is on some streets that go several block with no stop signs/lights. The MUP is still more enjoyable most of the time.

I only count places with stop signs or lights, or where I change direction controlled or not. For me it's about 30 in 15.5 so about 2 IPM. Most of those are in the 5 miles closest to home.

Close to 20 in a little more than a mile. I usually blow through them though. It's a very old city with short blocks. The town put up stop signs to keep commuter cars on the main road.

Mine would be almost 10 IPM.

68I/11km, There are only ten or so in the last 5 km. These are any intersection with another road.

20 intersections in my short route of 1.5 miles, so 13ish IPM.

If I ride the whole 13.5 miles in, there are 77 total so it goes down to 5.9 IPM.

43 intersections on my 20.1-mile one-way commute. So around 2.1 IPM.