I think their edge chips w use and that causes weepers (in come skins). might look in the scope?Feathers are notorious for being ridiculously punitive with technique they don't like. Irritation is one thing, but blood strongly suggests you needed a different technique than the one you used.
Some blades just don't work with some faces. Some blades don't work with some razors. I get great shaves with them and I've never had a weeper with a Feather, but I absolutely dread the day I will no longer be able to make that claim and I have always treated them with excess respect - tinged with a touch of fear. The good news is you hate a blade that's both expensive and has poor longevity. Good one! I count on them to give 2 good shaves, sometimes 3 - but not as good as the first two. I only recommend them for people who have beard hair like wire and nothing else is sharp enough - and many of those shavers only get one shave per blade.