Definitely not happening with my company either.
WFH has been super successful, reduced sickness, improved productivity and people on the whole are much happier!
Absolutely no way of slacking off within my company, we work on productivity, everything we do is registered, it's very simple if you are seen not to be productive then you will be managed the same way as if you were in the office.
Additionally, no way of slacking off as we also take customer calls, our management would soon be on our case if calls were waiting and we were seen not to be available, very easy to manage whether at home or in the office.
The days that I am in the office, there is multiple interruptions from people with general non work related chit chat, I am definitely more productive at home.
Hybrid for me, is the perfect work life balance, the company I work for appreciates that this way of working has improved mental health, I can't see it changing, not for us anyway.