So basically our entire OL is injured? To some degree?

Y'all are missing the point, it's not a reg "day off". Saint's have 2 primary backups on IR, as well. We had no OL available on Mon, if there was another injury. Can't stretch the field w/out better pass protection. We love that versatility, but do you really want Taysom Hill as a guard/tackle?
Peat is dinged up in multiple spots. Unger is in concussion protocol. Ramzyck has been struggling w/shoulder& Armstead just hit the list w/an additional knee injury. Bushrod is out(& slipping in performance.) Warford is likely the only typical "walking wounded" like most OL's throughout the league.
This will very likely change the game plan, in every phase, including raiding spec teams.