Right on. Thanks.
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Welcome… 
I just found one that way Larry. They buried the bathroom vent pipe under the insulation. I saw the insulation moving when I turned on the fan!
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Yes! Found a few like that as well! 
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Here’s one that was a dumb-ass give away ~ DUH!
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The soffit vent is an attic intake and the duct is an exhaust, so they’ll be working against each other, reducing the effectiveness of both. The exhaust vent should terminate at a separate exhaust discharge vent, so yes, call it out as improper.
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The point is the warm, moist air from the shower steam will get sucked right back into the building envelope, regardless if it’s at a separate vent or not. Shouldn’t vent the exhaust at a vented soffit, period, with or without a separate exhaust discharge vent.
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No issues with bathroom/soffit vent/venting as long as it has proper roof or wall terminations.
See it often in new construction and bathroom renovations in my neck of the woods. But what I don’t know is about venting regulations in your neck of the woods.
Advantages of Venting Bath Exhaust Out & Down Through a Soffit or Eaves
I see an issue with the ‘duct material.’ Flex ducts require insulation. Ducts must maintain a positive slope towards the exterior/opening.
I have used my IR camera to scan an area looking for those exhaust vents as well - cooler spots showing up inside the warm attic.
is not a vented soffit. Which most/majority of them are.
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Yes! I call them out when installed at vented soffit as well.
What is the built up box?
No clue what someone was thinking.
Was it to keep bogey men out?
Was it to keep the exhaust from being directly on the insulation after intentionally disconnecting?
Eaves are vented or not. If not vented, then the discharge is through-wall or eave.
Depending upon roof shape, the roof assembly is a non conditioned space that can be isolated/vaulted,
I see daylight. Wall or eave?
# HOW TO CALCULATE ATTIC VENT AREA NEEDED WHEN ADDING SOFFIT VENTS
So it was the exhaust fan? they probably ran the vent to it afterwards but never connected it. Otherwise, it’s possible the vent was underpowered and didn’t work well with the vent connected or the vent’s termination was causing some sort of an issue. The only sensible reasons why it would be done the way it was. But who knows, just a best guess. Regardless, obviously, it’s wrong.
This is at the eave! 
That roof looks flat, Junior. God only knows how many attics I have been in.
Mike. Pic of the outside eave please.
Yes,
Observation: No manufactured vent/duct termination. Open eave bay. Vent/Duct Discharge can enter the attic between the truss bay/heel at the eave.
Recommend: A licensed venting contractor properly terminate the bathroom duct and eave to prevent discharge and rodents from entering the attic or bathroom.
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I pick my battles carefully here. I find them buried under insulation all the time, and like Larry, I leave on the vent fans before I enter the attic. Those are clearly a defect. However, when someone vents to the soffit, being vented to the soffit far enough I usually give an informative comment rather than a defect comment as long as the attic has no signs of a mold issues and it is well ventilated. I will also comment about the use of the dryer hose since this type will retain condensation, and hard pipe is preferable. At least they got it venting in the right direction, to the exterior.
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