There's a config option to let you keep the recipes already. That wasn't the issue in the post I was quoting. The person to whom I responded wanted ALL the perks and benefits of 10 levels in a skill retained. He explicitly called out the larger fishing meter and better crops from higher levels of farming as examples. THAT is why I suggested to him the AllPerks mod. Because if there are no penalties for getting perk points, there's really no point in getting this mod. That's kinda the core mechanic.