Windows 10 will reach end of support on October 14, 2025. The current version, 22H2, will be the final version of Windows 10, and all editions will remain in support with monthly security update releases through that date. Existing LTSC releases will continue to receive updates beyond that date based on their specific lifecycles.
Yeah, IMO the majority of people that can switch to Linux already have. The rest are locked in by software they need for their livelihood that only works on Windows. Ofc you can tell them about WINE, but that doesn't always work very well and is outside of the comfort zone for most people (including me, who's been using Ubuntu since 2016).