Linux just has no upside over Windows in a dual boot context.
If you do dual-boot and don't care about the privacy of the data you put into Windows, I guess so.
I also personally keep no data on my devices, but if I did, having data that I need to reboot to get to would be friction I don't want.
Now I get your point. But still I would prefer to access my "personal" accounts from a device I trust.
Do you use a cloud service for your files?
Some stuff goes in GitHub, none of which I actually truly care about though.
I'm sure you'll groan. :)
But hey, if it's good enough for Cloudflare and Datadog (two past employers), it's good enough for me.
I also may be weird because I don't own any media and I'm perfectly happy with the streaming model. I enjoy not having the mental load of thinking about self-hosting and backing up terabytes of stuff.
I feel "lightweight" and I like it.
I have a Nextcloud instance for family to store files, though.
I have them on the separate nvmes and I disable Linux nvme before I boot into windows.
Last time I accidentally inserted encrypted pendrive I use in Linux when my windows was booted, it immediately offered razing the partition to the ground, creating a new one and quick formatting it. Very helpfully "OK" was preselected. If I was a bit more tired I'd be a bit sad.
Windows is intentionally hostile to anything non-windows. Enjoy your dual booting while it lasts :)