The older freeriders had a lot more material to them, the pair i got on black friday are a lot lighter (theres little or no lining/padding forward of the opening) so even splashing through a puddle results in instant wet socks.
On the upside they should dry near much quicker than the originals which took days, on the downside theres no way you can make a mesh pannel water resistant!
Waterproofing sprays and wax work, but only on material that is tightly woven or non woven (e.g. gore windstopper is made of a very tightly woven outer that effectively blocks the wind and showers, and a lighter inner layer. Gore-tex is a non woven membrane between two woven layers, treating the outer of either is only intended to help them shed the water droplets before the woven layers wet out).
Sealskin and gripgrab gaiters keeps your feet dry, but doesn’t help the fact you still have a big wet and cold shoe on the outside sucking all the heat out of it 😨.