Most of that simply is not true. You do not have an expectation of privacy in any area viewable from a public area, so if someone photographs or video tapes you in your front yard or open garage, or your garden, the chances of you collecting any damages is slim to none. They can't come on your property and video or photograph you without your permission, but they do not need your permission if they are doing that from their property or a public space. You generally can't use a telephoto lens to get pictures of a location that is not readily viewable, nor can you climb a fence to get pictures. The Karens and pervs you mention most likely took the photos where they were not allowed. If I was at the beach and wanted to take pictures of the girls in bikinis, I have every right to do that, it's creepy, but not illegal. This link helps explain it.If he is filming you on your property without your consent, get a lawyer. In today's world if you are caught videoing private citizens on their private property that citizen has the right to know what you are using their likeness for and can press charges if you do not have permission to video. If you are not a "public" figure and/or you are not involved in a public event, you have the expectation for privacy within your own boarders (yard, garage, house etc...). It is why most companies will have a disclaimer/permission slip included in the hiring package governing the use of any images of you. Perv's and Karen's get nailed all the time for taking pictures and posting them to the net without consent, if it were legal to video without consent then they could post video anywhere.
The "disclaimer" your employer uses is actually a model release so they can use that for advertising, marketing, etc. It's used for any recognizable person in photographs or videos, by signing that, you allow them to use the photos in that manner and you can't come back later and try to sue for damages. I have that in all my photography contracts so that I can use any photos I take for advertising, but I don't need a model release to post them on social media or on my website since that is considered my portfolio, and releases are not needed for a portfolio, even if the purpose of my portfolio is to generate business. You do not need a model release for any personal photos or any used in an editorial usage, ie magazines, newspapers, etc. If I have a great photo of you and you refuse to sign a model release, I can't sell that to someone that wants to use it for advertising, but I can sell it to any media outlet that wants to use it in a story they are running.