I always say, an OS is a tool, not a religion. I use Linux at home 98% of the time because it fits what I need to do and it's snappier than Windows on my hardware and gives me more control, or maybe I know better how to do certain things in Linux nowadays that I've left Windows mostly behind. I use Windows at work because that's what dictated, and also because MS Visio is only on Windows (I could use MacOS with Omnigraffle, but Macs are not available at my pay grade. Whatever). They pay me to work and be productive, and this means using Outlook/Teams, AD SSO integration with Edge, all the VPNs/network control/DLP agents. And luckily now I can use Linux subsystem in Windows, so I can work on the cli when I need to do something fancy. They don't pay me to spend hours trying to find a way to work with their systems other than what's supported.

On the topic at hand (bootloader issues). Never had a problem personally, but Iast time I did proper dual booting (on the same drive) was with Windows8.1. Now I have different drives, with the bios configured to boot from the drive with Linux. If I want to boot on Windows 10 I actually have to change the boot sequence. And even then there is grub (from an old dual boot setup).