> All recruiters that email me in office work are ignored

I would write a short reply that you won't consider their offers solely because of the office work requirement. Otherwise they can't be certain why they're being ignored. Make it abundantly clear why you're not interested. So when their managers grill them for low performance they can show them: Here boss, people aren't biting because we're asking them to come into the office. We need to change this asap.