I don't think there is much evidence to support standard 3-layer Goretex letting water through the actual fabric unless it's faulty or broken down with age.
Paramo is in a different category. It has no hydrostatic head measurement because it has very limited hydrostatic head resistance. You sit in a puddle in Paramo trousers for any length of time and you get a wet bottom. Its waterproofness is only measured to 4 hours using the Leeds Uni rain room test. That is a lot of water but it's not necessarily the same as 50mph driven rain on a mountain ridge either.
A plain Paramo fleece is surprisingly rain resistant in average conditions, for quite a while. The waxed "fur" makes the rain collect in drops and pushes them to the tips of the fibres where they roll off. But hard, persistent rain is too much for it and it gets driven in and soaks up. In the full Analogy clothing, the design combats this by putting a DWR coated polyester fabric over the top which serves two purposes: it absorbs the kinetic energy of driven rain so it's not driven through the fibres of the liner and the DWR causes a lot of the rain to bead up and drop off before it gets to the liner, thus reducing the amount of water it has to deal with.
So it makes perfect sense that very hard, windblown rain for hours on end can and will overwhelm the system. And the reports of users are all over the internet to read. Even when you discount the % of people who can't discriminate sweat from leaks, you can't ignore the fact that it fails under certain circumstances.
I own several bits of Paramo and I've been through some pretty hard rain and it's been fine, but I'm not blind to the potential for failure. it relies in its DWR beading ability much more than a membrane jacket does. Membranes get sweaty when they wet out, but with Paramo it lowers the actual waterproofness of it.
I've no idea if Gunwharfman's Paramo leaked through the fabric or if it was just rain getting through a zip or down the neck. Does the Alta II have an uncovered zip? On my jackets they only have internal storm-flaps and they're not as good as external ones. On the Quito the flaps are pretty narrow and water can get in the underarm vents slightly.