The felt of course should be visible in the attic and I don’t see how any air can transfer when the vent is flush with the ridge. Hard to tell but with the low profile it looks like a hip ridge vent.
From the photos it doesn’t look like any vent was installed. Has the roof recently been reshingled? Looks like a cap over an existing vent opening.
Are there other vents in the roof?
Thank you Vince and Jeff. The felt is defenetile not visible from the attic and what I touched is the plastic itself. The felt is actually right under the shingle. This is a newly re-shingled roof where there was no ridge vent. The way I look at this is like the following image but upside down.
