The Gen1 car has a much smaller 2-dimensional circle shaped strainer.
Subaru did tests and there was enough pressure, when 95% of the strainer was blocked. (info from Subaru-guy on German forum).
The Gen2 has a 3 dimensional strainer with much more area, so even when the "top" is blocked, the oil can flow at the sides.
ATM there is no evidence at all, that this is an issue.
Some days ago a video of a GEN1 car surfaced, whichs engine failed after the valve spring recall.
The strainer was blocked for more than 50% (by a piece of paper), but it was not the cause of the failure.
You could also clearly see MUCH sealant from the factory, that did not harm the car for almost 10 years.
(The reason of the failure was, that the owner did no services/oil changes and "drove without oil" for time - whatever this means)
Of course, when the sealant blocks an oil channel it WILL be the reason for a failure, but afaik this has not been the case, yet. Right?
I'm not an engineer and only can rely to infomartion i get from others, but i read somewhere, that its impossible, because the sealant in the strainer is somewhere "behind" the oil channels.
Also the pieces should fall out at the next oil change, right?