It took 3 years for W10 to become usable, and that's only with third apps like WindowsBlind, 7 + 7 Taskbar and DI Awareness.
Leaving W7 behind become an obligation, not really because the lack of patching .Use third party browsers (like Warefox and firewalls like TiyWall), and you're 99% protected. A little good sense, and security is 99,9%. No, it's because stuff deliberately does not work with W7, like 10G Internet access.
Now I have have 6200/670 on Speedtest app on W10, and 863/678 on W7 with the same Mellanox SFP+ 10G card.
Same will happen with W11, and them W12, but more slowly, M$ killed the maximum they could think on W7, I have a feeling that it will be mostly gadget for grand pa that won't work on W10.
So, take a breath, continue to use W10 customized with WB to look usable, use third party security tools when M$ will drop it and you're good for at least 7 years.