Any IT tech that manages their VPN can probably see the sites you use. As far as that goes they probably don't care. I was an IT admin for a long time and I intentionally avoided digging into people's lives. Depends on who manages the network though, if a tech existed who loved to collect info on people and build blackmail databases I wouldn't be surprised, they have access to a LOT of info.
That being said some corporate policy might force them to take action if they suspect something. There are certain things an IT tech can't ignore and must report to someone else. The severity of that might depend on if they can connect your posts and your account here to you. If you have a security related job, or security classifications it might be serious since it might make you less trustable.
Also if in the future you die and someone reveals or has records that you went to this site, they might be able to use it as evidence to not pay out a life insurance policy or something like that, but I don't think that'd be too likely.