Are you able to, as Your Company LLC, (self) certify yourself as a SOC2 complaint entity? Maintain your own records and be able to provide them for audits from the parent company?
I agree with much of what has been said, security theatre etc etc; but at the highest level, should companies take IT security seriously, absolutely. Is the implementation correct? Probably / certainly not. The real cancer is the total disregard for security and data privacy that has metastasized to the point where a leak containing everything from a company doesnt even register as an incident anymore.
If your contract was with the CIA and they had requirements, you would probably be on board with them. We have all been around the block and seen the state of some peoples computers; even technically gifted people with malware and spyware riddled computers, with the CashFollowerDataScrape Browser Toolbar installed and Password123 securing everything. Do these tools stop this sort of stuff, not really.
Work / Personal device seperation is always the answer, the red flags are the companies that demand compliance, but refuse to provide equipment. If the contract wants you to do something you are free to accept or decline. If the contract wants code written using their style guide it would be a similar cosideration, even if it meant spaces instead of tabs. if the contract wants you to code only using your index fingers only, are comfortable with it taking 10x longer and will pay 10x your normal hourly rate, you are free to accept or decline.