No, but it sure is annoying having to switch in the middle of doing something especially when you’re working. (Also, there’s that pesky thing that happened to me as well where windows doesn’t play nice with the Linux boot partition and fucks it up) So there’s always going to be a main os. If you’re fortunate enough you can use an old laptop for windows. Or, if your computer is powerful enough run an windows VM. For me, Gnome Boxes offered a really easy to use experience of running windows. It worked out of the box, no special tweaks.
I’m very curious… Why do you feel locked in by raindrop? I like that it can regularly upload exports to my Google drive and I can Always download them as html and csv.