This is not true. Remote companies and many hybrid companies will obviously make that part of your contract. When the fully remote company I worked for was acquired by a hybrid company, being guaranteed remote was a part of all of our contracts.
I worked for a fully remote company, and even though they did not have any physical offices to even have us come into, they refused to change in the contract where they reserved the right to have you work in a traditional office if they desired. They still are 100% remote to this day
