I think you could still use that music software on Windows 10. I’m not sure when they’ll cut off support for outdated operating systems but I don’t think many would jump ahead of Microsoft. Windows 10 being unsupported doesn’t mean that much if the software you use is trusted and you have a disaster recovery plan.
It’s important to have a solid backup policy in place for any data you don’t want to lose. Regardless of whether you’re on Windows 11 or Windows XP. If you want to keep using Windows 10, you can. Just gotta only install trusted software and use a browser that is getting security updates for Windows 10 (so not Edge, don’t know which others will be fine). You can watch porn on it too, porn sites are only as dangerous as your browser is insecure.
Now, the question of gaming. Dual-booting into Bazzite should meet your needs (I’ve never used it) but the question is how to keep it away from Windows 10. I live booted into a system with Windows 11 installed and could easily view and modify all the contents. Any malware that gets through Steam’s and Linux’s protections could easily install ransomware and cookie-stealers on Windows 11. This is true just as much for running the games natively on Windows 11.
Seperate devices would solve the issue, but that’d be a waste. Security in computing really needs SO much work. There are so many levels to this. If your security posture is relaxed enough you can just hope no malware gets through Steam’s checks and onto Bazzite, or into any of Bazzite’s dependencies. With meltdown and spectre I’m failing to imagine how I could keep Windows 10 or 11 safe from malware from gaming beyond Steam’s protections.
TLDR: Stick to Windows 10, install trusted software only and keep backups, dual-boot Bazzite for games, hope Steam catches any game malware I guess.
Two things: