Blade Tenderized ? Wow, I never noticed that. I don't buy a lot of 'steaks' from Costco, but when I have, I certainly never cooked them to 180F.
I'm going to look a lot closer when I buy in the future. If that's really their position on things, I will make sure I don't buy from there if they are doing that. Although I suspect, it's a CYA sort of thing, and the risks are probably very small. Honestly, I really don't understand why they would do that to steaks. If I see a label of that sort on something there, I'm going to ask someone about it for sure. It just seems odd to me that they would blade tenderize 'all' their meat. I can maybe understand some cuts might be that way, but to do it across the board , would just seem stupid.