You can't just do stuff the company (as bullshit as it is) tells you not to, break the software and then call the company shit for doing something out of scope.

The company's software can't just do stuff I (as bullshit as it is) don't want it to, break my system and/or overwrite data on partitions and drives I did not give it explicit or implicit permission to read, access, or modify, and then tell me my use case is unsupported and so I just have to deal with it.

I'm not OP and I don't even dual boot, but it's my computer, not Microsoft's. If I want to dual boot, and Windows breaks that despite me not making any changes to Windows, then yes the company deserves to have shit placed at their feet. Linux doesn't overwrite any Windows data when it updates unless you tell it to, so why have tons of people (including multiple friends) had Windows overwrite their Linux data on updates?