So you selected GG#4 and cookie crosses and you are surprised you have some herms? Doesn't matter who the breeder is, strains comprised of herm genetics will be herm prone. If you aren't willing to baby the plants to minimize stress, or to sift through some herms to select a stable keeper, don't grow crosses with unstable parentage.
I understand the frustration though, and agree that IH gear is under-tested and over-priced. I swore off In House for a couple years for these reasons, but snagged a couple of half-packs on Black Friday. Just an FYI though, you can't slag IHG for not testing and then say you are gonna grow Ethos instead lol - he releases 10x more crosses in a given year than almost anyone else, and it would be impossible for him to properly test the vast majority of it.
I can justify sifting through probable herms at the half pack sale price - not his usual $200-$250+ prices. I've grown out 7-8 packs of IHG overall and my general experience has been that there will be herms, but there will also usually be some serious heat to be found as well. Had some pretty high herm rates in half of those packs though.
At sale prices, I'll try my odds and run some half-packs to see. Definitely not running rooms full of In House seed plants though, way too risky.